From 6c3fa6b5a38dcecb48d9c43da67dab13ccd65709 Mon Sep 17 00:00:00 2001
From: kempersc <sckemper@mailfence.com>
Date: Thu, 15 Jan 2026 11:42:35 +0100
Subject: [PATCH] Remove deprecated slots and add new slot definitions for
 enhanced data modeling

- Deleted obsolete slot definitions for work_location and workshop_space.
- Introduced new TaxonName class to represent scientific taxonomic names with detailed attributes.
- Archived existing slots related to surname_prefix, target_name, taxon_name, terminal_count, text_region_count, title, title_proper, total_chapter, total_characters_extracted, total_connections_extracted, track_name, transcript_format, traveling_venue, type_label, type_status, typical_responsibility, unesco_domain, unesco_inscription_year, unesco_list_status, uniform_title, unit_name, used_by_custodian, uv_filtered_required, valid_from_geo, valid_to_geo, validation_status, variant_of_name, verification_date, viability_status, within_auxiliary_place, and within_place.
- Updated slot descriptions and structures to improve clarity and compliance with standards.
---
 .../schemas/20251121/linkml/manifest.json     |   2 +-
 frontend/src/hooks/usePersonSearch.ts         |  16 +-
 frontend/src/pages/EntityReviewPage.css       |  21 ++
 frontend/src/pages/EntityReviewPage.tsx       | 102 ++++----
 schemas/20251121/linkml/manifest.json         |   2 +-
 .../linkml/modules/classes/ActivityType.yaml  |  11 +-
 .../linkml/modules/classes/Appellation.yaml   |  26 ++-
 .../modules/classes/ApprovalTimeType.yaml     |   4 +-
 .../modules/classes/BiologicalObject.yaml     |  87 +++++--
 .../classes/CollectionManagementSystem.yaml   |  18 +-
 .../linkml/modules/classes/ConditionType.yaml |   4 +-
 .../classes/ConnectionSourceMetadata.yaml     |  36 +--
 .../linkml/modules/classes/CustodianType.yaml |   8 +-
 .../linkml/modules/classes/DomainType.yaml    |   4 +-
 .../modules/classes/EducationCenter.yaml      |  26 ++-
 .../linkml/modules/classes/Exhibition.yaml    |  36 ++-
 .../linkml/modules/classes/FacilityType.yaml  |   4 +-
 .../linkml/modules/classes/FindingAid.yaml    |  25 +-
 .../modules/classes/GeoSpatialPlace.yaml      |  32 ++-
 .../modules/classes/HTTPMethodType.yaml       |   4 +-
 .../modules/classes/InformationCarrier.yaml   |  12 +-
 .../classes/IntangibleHeritageForm.yaml       | 129 ++++++++---
 .../modules/classes/InvestmentArea.yaml       |   4 +-
 .../modules/classes/MeasurementUnit.yaml      |   4 +-
 .../modules/classes/MetadataStandardType.yaml |   4 +-
 .../modules/classes/NetworkAnalysis.yaml      |  27 ++-
 .../classes/OrganizationalChangeEvent.yaml    |   6 +-
 .../classes/OrganizationalStructure.yaml      |   6 +-
 .../linkml/modules/classes/Overview.yaml      |   6 +-
 .../linkml/modules/classes/PersonName.yaml    |  24 +-
 .../linkml/modules/classes/ProgramType.yaml   |   6 +-
 .../linkml/modules/classes/ReadingRoom.yaml   |  31 ++-
 .../modules/classes/ResponseFormatType.yaml   |   4 +-
 .../modules/classes/ResponsibilityType.yaml   |   4 +-
 .../linkml/modules/classes/ScopeType.yaml     |   8 +-
 .../linkml/modules/classes/ServiceArea.yaml   |   8 +-
 .../linkml/modules/classes/ServiceType.yaml   |   4 +-
 .../modules/classes/SocialMediaContent.yaml   |   6 +-
 .../modules/classes/SocialMediaPost.yaml      |   6 +-
 .../linkml/modules/classes/StaffRole.yaml     |   7 +-
 .../classes/StorageConditionPolicy.yaml       |  34 ++-
 .../linkml/modules/classes/StorageUnit.yaml   |   6 +-
 .../classes/TasteScentHeritageType.yaml       |   7 +-
 .../linkml/modules/classes/TaxonName.yaml     | 110 +++++++++
 .../modules/classes/TechnicalFeatureType.yaml |   4 +-
 .../linkml/modules/classes/TitleType.yaml     |   4 +-
 .../classes/TraditionalProductType.yaml       |   4 +-
 .../modules/classes/UNESCODomainType.yaml     |   4 +-
 .../modules/classes/UserCommunityType.yaml    |   4 +-
 .../linkml/modules/classes/VenueType.yaml     |   4 +-
 .../modules/classes/VideoAnnotationTypes.yaml |  41 ++--
 .../modules/classes/VideoChapterList.yaml     |  29 ++-
 .../linkml/modules/classes/VideoSubtitle.yaml |   6 +-
 .../modules/classes/VideoTextContent.yaml     |  25 +-
 .../modules/classes/VideoTranscript.yaml      |  21 +-
 .../linkml/modules/classes/WebLink.yaml       |   6 +-
 .../modules/classes/WorkExperience.yaml       |  34 ++-
 .../surname_prefix_archived_20260114.yaml}    |   0
 .../target_name_archived_20260114.yaml}       |   0
 .../taxon_name_archived_20260114.yaml}        |   0
 .../terminal_count_archived_20260114.yaml}    |   0
 .../text_region_count_archived_20260114.yaml} |   0
 .../title_archived_20260114.yaml}             |   0
 .../title_proper_archived_20260114.yaml}      |   0
 .../total_chapter_archived_20260114.yaml}     |   0
 ...aracters_extracted_archived_20260114.yaml} |   0
 ...nections_extracted_archived_20260114.yaml} |   0
 .../track_name_archived_20260114.yaml}        |   0
 .../transcript_format_archived_20260114.yaml} |   0
 .../traveling_venue_archived_20260114.yaml}   |   0
 .../type_label_archived_20260114.yaml}        |   0
 .../type_status_archived_20260114.yaml}       |   0
 ...cal_responsibility_archived_20260114.yaml} |   0
 .../unesco_domain_archived_20260114.yaml}     |   0
 ...o_inscription_year_archived_20260114.yaml} |   0
 ...unesco_list_status_archived_20260114.yaml} |   0
 .../uniform_title_archived_20260114.yaml}     |   0
 .../unit_name_archived_20260114.yaml}         |   0
 .../used_by_custodian_archived_20260114.yaml} |   0
 ..._filtered_required_archived_20260114.yaml} |   0
 .../valid_from_geo_archived_20260114.yaml}    |   0
 .../valid_to_geo_archived_20260114.yaml}      |   0
 .../validation_status_archived_20260114.yaml} |   0
 .../variant_of_name_archived_20260114.yaml}   |   0
 .../verification_date_archived_20260114.yaml} |   0
 .../viability_status_archived_20260114.yaml}  |   0
 ...in_auxiliary_place_archived_20260114.yaml} |   0
 .../within_place_archived_20260114.yaml}      |   0
 .../work_location_archived_20260114.yaml}     |   0
 .../workshop_space_archived_20260114.yaml}    |   0
 .../linkml/modules/slots/slot_fixes.yaml      | 217 +++++++++++++++++-
 scripts/index_persons_qdrant.py               |   4 +-
 92 files changed, 1056 insertions(+), 282 deletions(-)
 create mode 100644 schemas/20251121/linkml/modules/classes/TaxonName.yaml
 rename schemas/20251121/linkml/modules/slots/{surname_prefix.yaml => archive/surname_prefix_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{target_name.yaml => archive/target_name_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{taxon_name.yaml => archive/taxon_name_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{terminal_count.yaml => archive/terminal_count_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{text_region_count.yaml => archive/text_region_count_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{title.yaml => archive/title_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{title_proper.yaml => archive/title_proper_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{total_chapter.yaml => archive/total_chapter_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{total_characters_extracted.yaml => archive/total_characters_extracted_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{total_connections_extracted.yaml => archive/total_connections_extracted_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{track_name.yaml => archive/track_name_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{transcript_format.yaml => archive/transcript_format_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{traveling_venue.yaml => archive/traveling_venue_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{type_label.yaml => archive/type_label_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{type_status.yaml => archive/type_status_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{typical_responsibility.yaml => archive/typical_responsibility_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{unesco_domain.yaml => archive/unesco_domain_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{unesco_inscription_year.yaml => archive/unesco_inscription_year_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{unesco_list_status.yaml => archive/unesco_list_status_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{uniform_title.yaml => archive/uniform_title_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{unit_name.yaml => archive/unit_name_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{used_by_custodian.yaml => archive/used_by_custodian_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{uv_filtered_required.yaml => archive/uv_filtered_required_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{valid_from_geo.yaml => archive/valid_from_geo_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{valid_to_geo.yaml => archive/valid_to_geo_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{validation_status.yaml => archive/validation_status_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{variant_of_name.yaml => archive/variant_of_name_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{verification_date.yaml => archive/verification_date_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{viability_status.yaml => archive/viability_status_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{within_auxiliary_place.yaml => archive/within_auxiliary_place_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{within_place.yaml => archive/within_place_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{work_location.yaml => archive/work_location_archived_20260114.yaml} (100%)
 rename schemas/20251121/linkml/modules/slots/{workshop_space.yaml => archive/workshop_space_archived_20260114.yaml} (100%)

diff --git a/frontend/public/schemas/20251121/linkml/manifest.json b/frontend/public/schemas/20251121/linkml/manifest.json
index 76ac8c07a9..5ed6001d2b 100644
--- a/frontend/public/schemas/20251121/linkml/manifest.json
+++ b/frontend/public/schemas/20251121/linkml/manifest.json
@@ -1,5 +1,5 @@
 {
-  "generated": "2026-01-14T21:38:51.740Z",
+  "generated": "2026-01-14T21:57:09.847Z",
   "schemaRoot": "/schemas/20251121/linkml",
   "totalFiles": 3026,
   "categoryCounts": {
diff --git a/frontend/src/hooks/usePersonSearch.ts b/frontend/src/hooks/usePersonSearch.ts
index 7d23221b23..3849a80efb 100644
--- a/frontend/src/hooks/usePersonSearch.ts
+++ b/frontend/src/hooks/usePersonSearch.ts
@@ -151,8 +151,20 @@ export function usePersonSearch(options: UsePersonSearchOptions = {}): UsePerson
 
       const data: PersonSearchResponse = await response.json();
       
-      setResults(data.results);
-      setResultCount(data.result_count);
+      // Deduplicate results by name (Qdrant may return multiple embeddings per person)
+      const seen = new Map<string, PersonSearchResult>();
+      for (const result of data.results) {
+        const key = result.name.toLowerCase().trim();
+        const existing = seen.get(key);
+        // Keep the one with higher score, or the first if no scores
+        if (!existing || (result.score && existing.score && result.score > existing.score)) {
+          seen.set(key, result);
+        }
+      }
+      const dedupedResults = Array.from(seen.values());
+      
+      setResults(dedupedResults);
+      setResultCount(dedupedResults.length);
       setQueryTimeMs(data.query_time_ms);
       setEmbeddingModelUsed(data.embedding_model_used || null);
     } catch (err) {
diff --git a/frontend/src/pages/EntityReviewPage.css b/frontend/src/pages/EntityReviewPage.css
index ae88cb6faf..b2123273fa 100644
--- a/frontend/src/pages/EntityReviewPage.css
+++ b/frontend/src/pages/EntityReviewPage.css
@@ -680,6 +680,27 @@
   color: var(--text-secondary, #999);
 }
 
+/* Semantic result match states */
+.profile-item.semantic-result.has-match {
+  cursor: pointer;
+}
+
+.profile-item.semantic-result.no-match {
+  cursor: help;
+  opacity: 0.6;
+}
+
+.profile-item.semantic-result.no-match:hover {
+  opacity: 0.8;
+}
+
+.profile-item .match-indicator {
+  display: inline-flex;
+  align-items: center;
+  color: var(--success-color, #10b981);
+  margin-left: 0.25rem;
+}
+
 .profile-list {
   list-style: none;
   padding: 0;
diff --git a/frontend/src/pages/EntityReviewPage.tsx b/frontend/src/pages/EntityReviewPage.tsx
index d0dd2d51d6..6b348e60c0 100644
--- a/frontend/src/pages/EntityReviewPage.tsx
+++ b/frontend/src/pages/EntityReviewPage.tsx
@@ -980,47 +980,69 @@ export default function EntityReviewPage() {
           {/* Semantic Search Results */}
           {useSemanticSearch && semanticQuery && !semanticSearching && semanticResults.length > 0 ? (
             <ul className="profile-list semantic-results">
-              {semanticResults.map((result, idx) => (
-                <li 
-                  key={result.ppid || `semantic-${idx}`}
-                  className="profile-item semantic-result"
-                  onClick={() => {
-                    // If the result has a ppid, try to fetch that profile
-                    if (result.ppid) {
-                      fetchProfileDetail(result.ppid);
+              {semanticResults.map((result, idx) => {
+                // Try to find a matching profile in the loaded profiles by name
+                const matchingProfile = profiles.find(p => 
+                  p.name.toLowerCase().trim() === result.name.toLowerCase().trim()
+                );
+                
+                return (
+                  <li 
+                    key={result.ppid || `semantic-${idx}`}
+                    className={`profile-item semantic-result ${matchingProfile ? 'has-match' : 'no-match'}`}
+                    onClick={() => {
+                      if (matchingProfile) {
+                        // Found a matching WCMS profile - load it
+                        fetchProfileDetail(matchingProfile.ppid);
+                      } else {
+                        // No match - show a helpful message
+                        alert(language === 'nl' 
+                          ? `"${result.name}" is gevonden in de database maar heeft geen WCMS profiel op de huidige pagina. Probeer een andere pagina of filter.`
+                          : `"${result.name}" was found in the database but has no WCMS profile on the current page. Try a different page or filter.`
+                        );
+                      }
+                    }}
+                    title={matchingProfile 
+                      ? (language === 'nl' ? 'Klik om profiel te laden' : 'Click to load profile')
+                      : (language === 'nl' ? 'Geen WCMS profiel op huidige pagina' : 'No WCMS profile on current page')
                     }
-                  }}
-                >
-                  <div className="profile-item-header">
-                    <User size={16} />
-                    <span className="profile-name">{result.name}</span>
-                    {result.score && (
-                      <span className="score-badge" title="Match score">
-                        {(result.score * 100).toFixed(0)}%
-                      </span>
-                    )}
-                  </div>
-                  <div className="profile-item-meta">
-                    {result.headline && (
-                      <span className="headline-text" title={result.headline}>
-                        {result.headline.length > 40 ? result.headline.slice(0, 40) + '...' : result.headline}
-                      </span>
-                    )}
-                    {result.custodian_name && (
-                      <span className="custodian-badge">
-                        <Building2 size={12} />
-                        {result.custodian_name}
-                      </span>
-                    )}
-                    {result.location && (
-                      <span className="location-badge">
-                        <Globe size={12} />
-                        {result.location}
-                      </span>
-                    )}
-                  </div>
-                </li>
-              ))}
+                  >
+                    <div className="profile-item-header">
+                      <User size={16} />
+                      <span className="profile-name">{result.name}</span>
+                      {matchingProfile && (
+                        <span className="match-indicator" title={language === 'nl' ? 'Gevonden op pagina' : 'Found on page'}>
+                          <CheckCircle size={12} />
+                        </span>
+                      )}
+                      {result.score && (
+                        <span className="score-badge" title="Match score">
+                          {(result.score * 100).toFixed(0)}%
+                        </span>
+                      )}
+                    </div>
+                    <div className="profile-item-meta">
+                      {result.headline && (
+                        <span className="headline-text" title={result.headline}>
+                          {result.headline.length > 40 ? result.headline.slice(0, 40) + '...' : result.headline}
+                        </span>
+                      )}
+                      {result.custodian_name && (
+                        <span className="custodian-badge">
+                          <Building2 size={12} />
+                          {result.custodian_name}
+                        </span>
+                      )}
+                      {result.location && (
+                        <span className="location-badge">
+                          <Globe size={12} />
+                          {result.location}
+                        </span>
+                      )}
+                    </div>
+                  </li>
+                );
+              })}
             </ul>
           ) : useSemanticSearch && semanticQuery && !semanticSearching && semanticResults.length === 0 ? (
             <div className="empty-state">
diff --git a/schemas/20251121/linkml/manifest.json b/schemas/20251121/linkml/manifest.json
index 5ed6001d2b..c0b1507228 100644
--- a/schemas/20251121/linkml/manifest.json
+++ b/schemas/20251121/linkml/manifest.json
@@ -1,5 +1,5 @@
 {
-  "generated": "2026-01-14T21:57:09.847Z",
+  "generated": "2026-01-15T10:42:35.646Z",
   "schemaRoot": "/schemas/20251121/linkml",
   "totalFiles": 3026,
   "categoryCounts": {
diff --git a/schemas/20251121/linkml/modules/classes/ActivityType.yaml b/schemas/20251121/linkml/modules/classes/ActivityType.yaml
index 2e5dad7662..bc61fc0ee9 100644
--- a/schemas/20251121/linkml/modules/classes/ActivityType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ActivityType.yaml
@@ -31,7 +31,7 @@ imports:
   - ../slots/template_specificity
   - ../slots/type_description
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
 
@@ -126,7 +126,7 @@ classes:
       - template_specificity
       - type_description
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - wikidata_entity
     
     slot_usage:
@@ -141,10 +141,13 @@ classes:
           - value: https://nde.nl/ontology/hc/activity-type/conservation
             description: Conservation activity type
       
-      type_label:
+      has_or_had_label:  # was: type_label - migrated per Rule 53
         range: string
         required: true
         multivalued: true
+        description: |
+          Human-readable label for this activity type.
+          MIGRATED from type_label per slot_fixes.yaml (Rule 53).
         examples:
           - value: ["Curation@en", "curatie@nl", "Kuration@de"]
             description: Multilingual labels for curation type
@@ -191,7 +194,7 @@ classes:
     examples:
       - value:
           type_id: https://nde.nl/ontology/hc/activity-type/curation
-          type_label:
+          has_or_had_label:  # was: type_label
             - Curation@en
             - curatie@nl
           type_description: "Activities related to ongoing collection management"
diff --git a/schemas/20251121/linkml/modules/classes/Appellation.yaml b/schemas/20251121/linkml/modules/classes/Appellation.yaml
index db22ff62cc..b3e63e8489 100644
--- a/schemas/20251121/linkml/modules/classes/Appellation.yaml
+++ b/schemas/20251121/linkml/modules/classes/Appellation.yaml
@@ -19,7 +19,9 @@ imports:
 - ../slots/has_appellation_value
 - ../slots/has_appellation_language
 - ../slots/has_appellation_type
-- ../slots/variant_of_name
+# REMOVED 2026-01-14: ../slots/variant_of_name - migrated to is_or_was_alternative_form_of with Label
+- ../slots/is_or_was_alternative_form_of
+- ./Label
 - ../slots/specificity_annotation
 - ../slots/template_specificity
 - ./SpecificityAnnotation
@@ -51,7 +53,8 @@ classes:
     - has_appellation_value
     - specificity_annotation
     - template_specificity
-    - variant_of_name
+    # REMOVED 2026-01-14: variant_of_name - migrated to is_or_was_alternative_form_of with Label
+    - is_or_was_alternative_form_of
     slot_usage:
       has_appellation_value:
         range: string
@@ -61,6 +64,19 @@ classes:
         pattern: ^[a-z]{2}$
       has_appellation_type:
         range: AppellationTypeEnum
-      variant_of_name:
-        range: CustodianName
-        required: false
+      # REMOVED 2026-01-14: variant_of_name - migrated to is_or_was_alternative_form_of with Label
+      # variant_of_name:
+      #   range: CustodianName
+      #   required: false
+      is_or_was_alternative_form_of:
+        range: Label
+        inlined: true
+        description: |
+          Reference to the CustodianName this appellation is a variant of.
+          MIGRATED 2026-01-14: Replaces variant_of_name slot.
+        examples:
+        - value: |
+            Label:
+              label_value: "Rijksmuseum"
+              label_language: "nl"
+          description: Dutch name this appellation is variant of
diff --git a/schemas/20251121/linkml/modules/classes/ApprovalTimeType.yaml b/schemas/20251121/linkml/modules/classes/ApprovalTimeType.yaml
index 6a5bef60b4..48599db680 100644
--- a/schemas/20251121/linkml/modules/classes/ApprovalTimeType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ApprovalTimeType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   ApprovalTimeType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/BiologicalObject.yaml b/schemas/20251121/linkml/modules/classes/BiologicalObject.yaml
index 48e92c6efe..696435f7c8 100644
--- a/schemas/20251121/linkml/modules/classes/BiologicalObject.yaml
+++ b/schemas/20251121/linkml/modules/classes/BiologicalObject.yaml
@@ -53,12 +53,16 @@ imports:
 - ../slots/specificity_annotation
 - ../slots/specimen_count
 - ../slots/specimen_type
-- ../slots/taxon_name
+# REMOVED 2026-01-14: ../slots/taxon_name - migrated to has_or_had_label with TaxonName (Rule 53)
+- ../slots/has_or_had_label
+- ./TaxonName
 - ../slots/taxon_remark
 - ../slots/taxonomic_authority
 - ../slots/taxonomic_rank
 - ../slots/template_specificity
-- ../slots/type_status
+# REMOVED 2026-01-14: ../slots/type_status - migrated to has_or_had_status with TypeStatus
+- ../slots/has_or_had_status
+- ./TypeStatus
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ../slots/has_associated_taxon
@@ -137,12 +141,14 @@ classes:
     - specificity_annotation
     - specimen_count
     - specimen_type
-    - taxon_name
+    # REMOVED 2026-01-14: taxon_name - migrated to has_or_had_label with TaxonName (Rule 53)
+    - has_or_had_label  # was: taxon_name - migrated per Rule 53
     - taxon_remark
     - taxonomic_authority
     - taxonomic_rank
     - template_specificity
-    - type_status
+    # REMOVED 2026-01-14: type_status - migrated to has_or_had_status with TypeStatus
+    - has_or_had_status
     slot_usage:
       is_or_was_associated_with:
         description: >-
@@ -168,13 +174,33 @@ classes:
               id: https://nde.nl/ontology/hc/bold-id/NLNAT001-21
               identifier_value: NLNAT001-21
             description: BOLD identifier for specimen
-      taxon_name:
+      # DEPRECATED: taxon_name - migrated to has_or_had_label (2026-01-14, Rule 53)
+      # taxon_name:
+      #   required: true
+      #   range: string
+      #   examples:
+      #   - value: Raphus cucullatus (Linnaeus, 1758)
+      #     description: Dodo with nomenclatural authority
+      #   - value: Panthera leo
+      #     description: Lion (authority omitted)
+      has_or_had_label:  # was: taxon_name - migrated per Rule 53
+        description: |
+          Scientific taxonomic name for this biological object.
+          MIGRATED from taxon_name per slot_fixes.yaml (Rule 53).
+          
+          Uses TaxonName class for structured representation.
+        range: TaxonName
+        inlined: true
         required: true
-        range: string
         examples:
-        - value: Raphus cucullatus (Linnaeus, 1758)
+        - value:
+            scientific_name: "Raphus cucullatus (Linnaeus, 1758)"
+            authorship: "Linnaeus, 1758"
+            taxonomic_rank: SPECIES
           description: Dodo with nomenclatural authority
-        - value: Panthera leo
+        - value:
+            scientific_name: "Panthera leo"
+            taxonomic_rank: SPECIES
           description: Lion (authority omitted)
       common_name:
         required: false
@@ -248,11 +274,25 @@ classes:
         examples:
         - value: true
           description: Type specimen
-      type_status:
+      # REMOVED 2026-01-14: type_status - migrated to has_or_had_status with TypeStatus
+      # type_status:
+      #   required: false
+      #   range: string
+      #   examples:
+      #   - value: Holotype of Raphus cucullatus Linnaeus, 1758
+      has_or_had_status:
+        range: TypeStatus
+        inlined: true
+        description: |
+          Type status designation for this specimen.
+          MIGRATED 2026-01-14: Replaces type_status slot.
         required: false
-        range: string
         examples:
-        - value: Holotype of Raphus cucullatus Linnaeus, 1758
+        - value: |
+            TypeStatus:
+              status_value: "Holotype of Raphus cucullatus Linnaeus, 1758"
+              status_type: "nomenclatural"
+          description: Holotype status
       sex:
         required: false
         range: string
@@ -413,9 +453,12 @@ classes:
     - value:
         object_id: https://nde.nl/ontology/hc/object/oum-dodo-head
         object_name: Oxford Dodo
-        object_description: "The only surviving dodo soft tissue - a head with preserved skin and \nfeathers, plus associated\
-          \ foot. The most complete dodo specimen known.\nDonated by Elias Ashmole in 1683.\n"
-        taxon_name: Raphus cucullatus (Linnaeus, 1758)
+        object_description: "The only surviving dodo soft tissue - a head with preserved skin and \\nfeathers, plus associated\\\n          \\ foot. The most complete dodo specimen known.\\nDonated by Elias Ashmole in 1683.\\n"
+        # taxon_name: Raphus cucullatus (Linnaeus, 1758) - MIGRATED to has_or_had_label (2026-01-14)
+        has_or_had_label:
+          scientific_name: "Raphus cucullatus (Linnaeus, 1758)"
+          authorship: "Linnaeus, 1758"
+          taxonomic_rank: SPECIES
         common_name:
         - Dodo
         - Dronte
@@ -442,7 +485,11 @@ classes:
           One of the finest examples of this extinct megafauna.
 
           '
-        taxon_name: Megatherium americanum Cuvier, 1796
+        # taxon_name: Megatherium americanum Cuvier, 1796 - MIGRATED to has_or_had_label (2026-01-14)
+        has_or_had_label:
+          scientific_name: "Megatherium americanum Cuvier, 1796"
+          authorship: "Cuvier, 1796"
+          taxonomic_rank: SPECIES
         common_name:
         - Giant Ground Sloth
         taxonomic_rank: SPECIES
@@ -459,7 +506,11 @@ classes:
         object_description: 'Herbarium type specimen of English Oak collected by Linnaeus.
 
           '
-        taxon_name: Quercus robur L.
+        # taxon_name: Quercus robur L. - MIGRATED to has_or_had_label (2026-01-14)
+        has_or_had_label:
+          scientific_name: "Quercus robur L."
+          authorship: "L."
+          taxonomic_rank: SPECIES
         common_name:
         - English Oak
         - Pedunculate Oak
@@ -467,7 +518,9 @@ classes:
         taxonomic_authority: Linnaeus, 1753
         specimen_type: LECTOTYPE
         is_type_specimen: true
-        type_status: Lectotype of Quercus robur L., designated by Schwarz (1936)
+        has_or_had_status:  # was: type_status
+          status_value: Lectotype of Quercus robur L., designated by Schwarz (1936)
+          status_type: nomenclatural
         part_type:
         - LEAF
         - FLOWER
diff --git a/schemas/20251121/linkml/modules/classes/CollectionManagementSystem.yaml b/schemas/20251121/linkml/modules/classes/CollectionManagementSystem.yaml
index 1da69ddde7..01720297fd 100644
--- a/schemas/20251121/linkml/modules/classes/CollectionManagementSystem.yaml
+++ b/schemas/20251121/linkml/modules/classes/CollectionManagementSystem.yaml
@@ -31,7 +31,8 @@ imports:
 - ../slots/supported_metadata_standard
 - ../slots/template_specificity
 - ../slots/temporal_extent
-- ../slots/used_by_custodian
+# REMOVED 2026-01-14: ../slots/used_by_custodian - migrated to is_or_was_used_by with Custodian
+- ../slots/is_or_was_used_by
 # Migrated per slot_fixes.yaml (Rule 53) - 2026-01-14
 # vendor_name → has_or_had_label + Label
 # vendor_url → has_or_had_url + URL (URL already imported above)
@@ -125,7 +126,8 @@ classes:
     - supported_metadata_standard
     - template_specificity
     - temporal_extent
-    - used_by_custodian
+    # REMOVED 2026-01-14: used_by_custodian - migrated to is_or_was_used_by with Custodian
+    - is_or_was_used_by
     # Migrated per slot_fixes.yaml (Rule 53) - 2026-01-14
     - has_or_had_label  # was: vendor_name
     - has_or_had_url    # was: vendor_url
@@ -262,9 +264,19 @@ classes:
         examples:
         - value: https://nde.nl/ontology/hc/collection/rm-paintings
           description: Collection managed by this CMS
-      used_by_custodian:
+      # REMOVED 2026-01-14: used_by_custodian - migrated to is_or_was_used_by with Custodian
+      # used_by_custodian:
+      #   range: Custodian
+      #   multivalued: true
+      #   examples:
+      #   - value: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
+      #     description: Rijksmuseum uses this CMS
+      is_or_was_used_by:
         range: Custodian
         multivalued: true
+        description: |
+          Custodians that use or used this CMS.
+          MIGRATED 2026-01-14: Replaces used_by_custodian slot.
         examples:
         - value: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
           description: Rijksmuseum uses this CMS
diff --git a/schemas/20251121/linkml/modules/classes/ConditionType.yaml b/schemas/20251121/linkml/modules/classes/ConditionType.yaml
index 6e86e25aa1..d3cbb8b4a1 100644
--- a/schemas/20251121/linkml/modules/classes/ConditionType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ConditionType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   ConditionType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/ConnectionSourceMetadata.yaml b/schemas/20251121/linkml/modules/classes/ConnectionSourceMetadata.yaml
index d3e09c3054..fd47397dbb 100644
--- a/schemas/20251121/linkml/modules/classes/ConnectionSourceMetadata.yaml
+++ b/schemas/20251121/linkml/modules/classes/ConnectionSourceMetadata.yaml
@@ -19,7 +19,9 @@ imports:
 - ../slots/scraped_timestamp
 - ../slots/source_url
 - ../slots/specificity_annotation
-- ../slots/target_name
+# REMOVED 2026-01-14: ../slots/target_name - migrated to has_or_had_label with Label
+- ../slots/has_or_had_label
+- ./Label
 - ../slots/target_profile
 - ../slots/template_specificity
 default_prefix: hc
@@ -60,7 +62,8 @@ classes:
     - scraped_timestamp
     - source_url
     - specificity_annotation
-    - target_name
+    # REMOVED 2026-01-14: target_name - migrated to has_or_had_label with Label
+    - has_or_had_label
     - target_profile
     - template_specificity
     slot_usage:
@@ -79,20 +82,27 @@ classes:
         range: ScrapeMethodEnum
         required: true
         examples:
-        - value: manual_linkedin_browse
-      target_profile:
-        range: string
-        required: true
-        pattern: ^[a-z0-9-]+$
-        examples:
-        - value: giovannafossati
         - value: alexandr-belov-bb547b46
-      target_name:
-        range: string
+      # REMOVED 2026-01-14: target_name - migrated to has_or_had_label with Label
+      # target_name:
+      #   range: string
+      #   required: true
+      #   examples:
+      #   - value: Giovanna Fossati
+      #   - value: Alexandr Belov
+      has_or_had_label:
+        range: Label
+        inlined: true
+        description: |
+          Target name of the connection source (person name).
+          MIGRATED 2026-01-14: Replaces target_name slot.
         required: true
         examples:
-        - value: Giovanna Fossati
-        - value: Alexandr Belov
+        - value: |
+            Label:
+              label_value: "Giovanna Fossati"
+              label_type: "person_name"
+          description: Person name for connection source
       connections_extracted:
         range: integer
         required: true
diff --git a/schemas/20251121/linkml/modules/classes/CustodianType.yaml b/schemas/20251121/linkml/modules/classes/CustodianType.yaml
index 836db87c5f..16a14aa038 100644
--- a/schemas/20251121/linkml/modules/classes/CustodianType.yaml
+++ b/schemas/20251121/linkml/modules/classes/CustodianType.yaml
@@ -14,7 +14,7 @@ imports:
 - ../slots/template_specificity
 - ../slots/type_description
 - ../slots/type_id
-- ../slots/type_label
+- ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ../slots/custodian_type_broader
@@ -78,7 +78,7 @@ classes:
     - template_specificity
     - type_description
     - type_id
-    - type_label
+    - has_or_had_label  # was: type_label
     - wikidata_entity
     slot_usage:
       type_id:
@@ -94,7 +94,7 @@ classes:
         range: string
         required: true
         pattern: ^Q[0-9]+$
-      type_label:
+      has_or_had_label:  # was: type_label
         range: string
         required: true
         multivalued: true
@@ -134,7 +134,7 @@ classes:
         type_id: https://nde.nl/ontology/hc/type/museum/Q207694
         glamorcubesfixphdnt_code: M
         wikidata_entity: Q207694
-        type_label:
+        has_or_had_label:  # was: type_label
         - Art Museum@en
         - kunstmuseum@nl
         - Kunstmuseum@de
diff --git a/schemas/20251121/linkml/modules/classes/DomainType.yaml b/schemas/20251121/linkml/modules/classes/DomainType.yaml
index 199d1cdcf7..21448b3c85 100644
--- a/schemas/20251121/linkml/modules/classes/DomainType.yaml
+++ b/schemas/20251121/linkml/modules/classes/DomainType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   DomainType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/EducationCenter.yaml b/schemas/20251121/linkml/modules/classes/EducationCenter.yaml
index 04ea3b7fbf..d16b3a7cf5 100644
--- a/schemas/20251121/linkml/modules/classes/EducationCenter.yaml
+++ b/schemas/20251121/linkml/modules/classes/EducationCenter.yaml
@@ -28,7 +28,9 @@ imports:
 - ../slots/template_specificity
 - ../slots/was_derived_from
 - ../slots/was_generated_by
-- ../slots/workshop_space
+# REMOVED 2026-01-14: ../slots/workshop_space - migrated to has_or_had_quantity with Quantity
+- ../slots/has_or_had_quantity
+- ./Quantity
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ../slots/has_or_had_annual_participant_count
@@ -100,7 +102,8 @@ classes:
     - template_specificity
     - was_derived_from
     - was_generated_by
-    - workshop_space
+    # REMOVED 2026-01-14: workshop_space - migrated to has_or_had_quantity with Quantity
+    - has_or_had_quantity
     slot_usage:
       education_center_id:
         range: uriorcurie
@@ -160,10 +163,23 @@ classes:
         examples:
         - value: 4
           description: 4 classrooms
-      workshop_space:
-        range: integer
+      # REMOVED 2026-01-14: workshop_space - migrated to has_or_had_quantity with Quantity
+      # workshop_space:
+      #   range: integer
+      #   examples:
+      #   - value: 2
+      #     description: 2 workshop spaces
+      has_or_had_quantity:
+        range: Quantity
+        inlined: true
+        description: |
+          Quantity-based measurement (e.g., workshop_space count).
+          MIGRATED 2026-01-14: Replaces workshop_space slot.
         examples:
-        - value: 2
+        - value: |
+            Quantity:
+              value: 2
+              unit: "workshop_spaces"
           description: 2 workshop spaces
       max_group_size:
         range: integer
diff --git a/schemas/20251121/linkml/modules/classes/Exhibition.yaml b/schemas/20251121/linkml/modules/classes/Exhibition.yaml
index d34d16db2f..d9b3e210a2 100644
--- a/schemas/20251121/linkml/modules/classes/Exhibition.yaml
+++ b/schemas/20251121/linkml/modules/classes/Exhibition.yaml
@@ -44,7 +44,9 @@ imports:
 - ../slots/has_or_had_related_exhibition
 - ../slots/specificity_annotation
 - ../slots/template_specificity
-- ../slots/traveling_venue
+# REMOVED 2026-01-14: ../slots/traveling_venue - migrated to has_or_had_venue with Venue
+- ../slots/has_or_had_venue
+- ./Venue
 - ../slots/has_or_had_quantity
 - ./Quantity
 - ./SpecificityAnnotation
@@ -108,7 +110,8 @@ classes:
     - specificity_annotation
     - start_date
     - template_specificity
-    - traveling_venue
+    # REMOVED 2026-01-14: traveling_venue - migrated to has_or_had_venue with Venue
+    - has_or_had_venue
     - has_or_had_quantity
     - wikidata_id
     slot_usage:
@@ -274,13 +277,32 @@ classes:
         inlined: false
         examples:
         - value: https://nde.nl/ontology/hc/exhibition/mauritshuis-vermeer-2014
-      traveling_venue:
-        required: false
-        range: string
+      # REMOVED 2026-01-14: traveling_venue - migrated to has_or_had_venue with Venue
+      # traveling_venue:
+      #   required: false
+      #   range: string
+      #   multivalued: true
+      #   examples:
+      #   - value: Rijksmuseum, Amsterdam (Feb 10 - Jun 4, 2023)
+      #   - value: National Gallery, London (Jul 1 - Oct 15, 2023)
+      has_or_had_venue:
+        range: Venue
         multivalued: true
+        inlined: true
+        description: |
+          Venues for a traveling exhibition.
+          MIGRATED 2026-01-14: Replaces traveling_venue slot.
         examples:
-        - value: Rijksmuseum, Amsterdam (Feb 10 - Jun 4, 2023)
-        - value: National Gallery, London (Jul 1 - Oct 15, 2023)
+        - value: |
+            Venue:
+              venue_name: "Rijksmuseum, Amsterdam"
+              venue_dates: "Feb 10 - Jun 4, 2023"
+          description: First traveling venue
+        - value: |
+            Venue:
+              venue_name: "National Gallery, London"
+              venue_dates: "Jul 1 - Oct 15, 2023"
+          description: Second traveling venue
       wikidata_id:
         required: false
         range: string
diff --git a/schemas/20251121/linkml/modules/classes/FacilityType.yaml b/schemas/20251121/linkml/modules/classes/FacilityType.yaml
index 518b9cc9b0..2f5938f71f 100644
--- a/schemas/20251121/linkml/modules/classes/FacilityType.yaml
+++ b/schemas/20251121/linkml/modules/classes/FacilityType.yaml
@@ -17,7 +17,7 @@ default_prefix: hc
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 
 classes:
@@ -37,7 +37,7 @@ classes:
       
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
     
     exact_mappings:
diff --git a/schemas/20251121/linkml/modules/classes/FindingAid.yaml b/schemas/20251121/linkml/modules/classes/FindingAid.yaml
index 3798ed7a38..c0b6cdde01 100644
--- a/schemas/20251121/linkml/modules/classes/FindingAid.yaml
+++ b/schemas/20251121/linkml/modules/classes/FindingAid.yaml
@@ -46,7 +46,7 @@ imports:
 - ../slots/claim_type
 - ../slots/claim_value
 - ../slots/source_url
-- ../slots/title
+- ../slots/has_or_had_label  # was: title - migrated per Rule 53
 - ../slots/date
 - ../slots/note
 - ../slots/creator
@@ -141,7 +141,9 @@ imports:
 - ../slots/topic
 - ../slots/type
 - ../slots/url
-- ../slots/validation_status
+# REMOVED 2026-01-14: ../slots/validation_status - migrated to has_or_had_status with ValidationStatus
+- ../slots/has_or_had_status
+- ./ValidationStatus
 - ../slots/wikidata
 # REMOVED: ../slots/wikidata_class - migrated to is_or_was_instance_of with WikiDataEntry (2026-01-14, Rule 53)
 - ../slots/is_or_was_instance_of
@@ -265,7 +267,7 @@ classes:
     - supersede
     - template_specificity
     - finding_aid_temporal_coverage
-    - title
+    - has_or_had_label  # was: title
     - topic
     - url
     - temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
@@ -284,7 +286,7 @@ classes:
         description: |
           The type classification of this finding aid.
           Uses FindingAidType class hierarchy.
-      title:
+      has_or_had_label:  # was: title
         required: true
       url:
         required: true
@@ -703,7 +705,8 @@ classes:
     - source_url
     - specificity_annotation
     - template_specificity
-    - validation_status
+    # REMOVED 2026-01-14: validation_status - migrated to has_or_had_status with ValidationStatus
+    - has_or_had_status
     slot_usage:
       date_retrieved:
         range: date
@@ -714,6 +717,18 @@ classes:
         range: uri
       claims_count:
         range: integer
+      has_or_had_status:
+        range: ValidationStatus
+        required: false
+        inlined: true
+        description: |
+          Validation status of this finding aid retrieval.
+          MIGRATED 2026-01-14: Replaces validation_status slot.
+        examples:
+        - value:
+            status_type: VALIDATED
+            status_date: "2026-01-14"
+          description: Validated finding aid data
     exact_mappings:
     - prov:Activity
   PageSection:
diff --git a/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml b/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml
index 78c8fc6269..170615a9a7 100644
--- a/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml
+++ b/schemas/20251121/linkml/modules/classes/GeoSpatialPlace.yaml
@@ -29,8 +29,9 @@ imports:
 - ../slots/spatial_resolution
 - ../slots/specificity_annotation
 - ../slots/template_specificity
-- ../slots/valid_from_geo
-- ../slots/valid_to_geo
+- ../slots/temporal_extent  # was: valid_from_geo + valid_to_geo - migrated per Rule 53
+- ./TimeSpan
+# REMOVED 2026-01-14: valid_from_geo + valid_to_geo - migrated to temporal_extent (Rule 53)
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ../enums/GeometryTypeEnum
@@ -100,7 +101,7 @@ classes:
 
       3. **Administrative boundaries**: Archive jurisdiction area (MultiPolygon)
 
-      4. **Historical boundaries**: Pre-merger municipal territory (Polygon + valid_to_geo)
+      4. **Historical boundaries**: Pre-merger municipal territory (Polygon + temporal_extent)
 
 
       **Relationship to CustodianPlace**:
@@ -138,7 +139,7 @@ classes:
 
       Organizational changes may affect geographic location:
 
-      - RELOCATION: New GeoSpatialPlace, old one gets valid_to_geo
+      - RELOCATION: New GeoSpatialPlace, old one gets temporal_extent.end_of_the_end
 
       - MERGER: Multiple locations → single primary + auxiliary locations
 
@@ -174,8 +175,7 @@ classes:
     - spatial_resolution
     - specificity_annotation
     - template_specificity
-    - valid_from_geo
-    - valid_to_geo
+    - temporal_extent  # was: valid_from_geo + valid_to_geo - migrated per Rule 53
     slot_usage:
       geospatial_id:
         identifier: true
@@ -214,6 +214,19 @@ classes:
             identifier_scheme: cadastral
             identifier_value: ASD04-H-4567
           description: Amsterdam cadastral parcel identifier
+      temporal_extent:  # was: valid_from_geo + valid_to_geo - migrated per Rule 53
+        description: |
+          Validity period for geospatial data using CIDOC-CRM TimeSpan.
+          MIGRATED from valid_from_geo + valid_to_geo per slot_fixes.yaml (Rule 53).
+          Use for tracking boundary changes (e.g., municipal mergers).
+        range: TimeSpan
+        inlined: true
+        required: false
+        examples:
+        - value:
+            begin_of_the_begin: '1920-01-01'
+            end_of_the_end: '2001-01-01'
+          description: Historical archive jurisdiction boundary validity (pre-merger)
     comments:
     - Follows TOOI BestuurlijkeRuimte pattern using GeoSPARQL
     - 'CRITICAL: NOT a nominal reference - this is measured/surveyed location data'
@@ -222,7 +235,7 @@ classes:
     - Link from CustodianPlace via has_geospatial_location slot
     - Link from AuxiliaryPlace via has_geospatial_location slot (subordinate sites)
     - Link from OrganizationalChangeEvent via has_or_had_affected_territory slot
-    - valid_from_geo/valid_to_geo track boundary changes over time
+    - temporal_extent tracks boundary changes over time (was valid_from_geo/valid_to_geo)
     - OSM and GeoNames IDs enable external linking
     see_also:
     - http://www.opengis.net/ont/geosparql
@@ -271,6 +284,7 @@ classes:
         spatial_resolution: REGION
         feature_class: A
         feature_code: A.ADM1
-        valid_from_geo: '1920-01-01'
-        valid_to_geo: '2001-01-01'
+        temporal_extent:  # was: valid_from_geo + valid_to_geo
+          begin_of_the_begin: '1920-01-01'
+          end_of_the_end: '2001-01-01'
       description: Historical archive jurisdiction boundary (pre-merger)
diff --git a/schemas/20251121/linkml/modules/classes/HTTPMethodType.yaml b/schemas/20251121/linkml/modules/classes/HTTPMethodType.yaml
index 958cd34d08..d258e2d4b4 100644
--- a/schemas/20251121/linkml/modules/classes/HTTPMethodType.yaml
+++ b/schemas/20251121/linkml/modules/classes/HTTPMethodType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   HTTPMethodType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml b/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml
index 94262cdcab..24705c0bf4 100644
--- a/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml
+++ b/schemas/20251121/linkml/modules/classes/InformationCarrier.yaml
@@ -64,8 +64,8 @@ imports:
 - ../slots/specificity_annotation
 - ../slots/template_specificity
 - ../slots/text_direction
-- ../slots/title_proper
-- ../slots/uniform_title
+- ../slots/has_or_had_label  # was: title_proper - migrated per Rule 53
+- ../slots/has_or_had_label  # was: uniform_title - migrated per Rule 53
 - ../slots/writing_system
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
@@ -151,8 +151,8 @@ classes:
     - specificity_annotation
     - template_specificity
     - text_direction
-    - title_proper
-    - uniform_title
+    - has_or_had_label  # was: title_proper
+    - has_or_had_label  # was: uniform_title
     - writing_system
     slot_usage:
       carrier_type:
@@ -451,7 +451,7 @@ classes:
         examples:
         - value: Vulgate Latin Bible
         - value: Hamlet by William Shakespeare
-      title_proper:
+      has_or_had_label:  # was: title_proper
         required: false
         range: string
         examples:
@@ -463,7 +463,7 @@ classes:
         multivalued: true
         examples:
         - value: The Holy Bible (English parallel title)
-      uniform_title:
+      has_or_had_label:  # was: uniform_title
         required: false
         range: string
         examples:
diff --git a/schemas/20251121/linkml/modules/classes/IntangibleHeritageForm.yaml b/schemas/20251121/linkml/modules/classes/IntangibleHeritageForm.yaml
index 6c51fbb0ec..c8dbf26791 100644
--- a/schemas/20251121/linkml/modules/classes/IntangibleHeritageForm.yaml
+++ b/schemas/20251121/linkml/modules/classes/IntangibleHeritageForm.yaml
@@ -10,8 +10,11 @@ imports:
 - ../slots/wikidata_id
 - ../slots/geographic_scope
 - ../enums/UNESCOICHDomainEnum
-- ../enums/UNESCOListStatusEnum
-- ../enums/ICHViabilityStatusEnum
+# REMOVED 2026-01-14: ../enums/UNESCOListStatusEnum - migrated to has_or_had_status with UNESCOListStatus (Rule 53)
+# REMOVED 2026-01-14: ../enums/ICHViabilityStatusEnum - migrated to has_or_had_status with ViabilityStatus (Rule 53)
+- ../slots/has_or_had_status  # was: unesco_list_status, viability_status - migrated per Rule 53
+- ./ViabilityStatus
+- ./UNESCOListStatus
 - ../slots/has_or_had_custodian_type
 - ../slots/external_link
 - ../slots/heritage_form_description
@@ -27,10 +30,14 @@ imports:
 - ../slots/template_specificity
 - ../slots/threat
 - ../slots/has_or_had_transmission_method
-- ../slots/unesco_domain
-- ../slots/unesco_inscription_year
-- ../slots/unesco_list_status
-- ../slots/viability_status
+# REMOVED 2026-01-14: ../slots/unesco_domain - migrated to is_or_was_categorized_as with UNESCODomain
+- ../slots/is_or_was_categorized_as
+- ./UNESCODomain
+- ../slots/temporal_extent  # was: unesco_inscription_year - migrated per Rule 53
+- ./TimeSpan
+# REMOVED 2026-01-14: unesco_inscription_year - migrated to temporal_extent (Rule 53)
+# REMOVED 2026-01-14: unesco_list_status - migrated to has_or_had_status with UNESCOListStatus (Rule 53)
+# REMOVED 2026-01-14: viability_status - migrated to has_or_had_status with ViabilityStatus (Rule 53)
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 prefixes:
@@ -141,10 +148,11 @@ classes:
     - template_specificity
     - threat
     - has_or_had_transmission_method
-    - unesco_domain
-    - unesco_inscription_year
-    - unesco_list_status
-    - viability_status
+    # REMOVED 2026-01-14: unesco_domain - migrated to is_or_was_categorized_as with UNESCODomain
+    - is_or_was_categorized_as
+    - temporal_extent  # was: unesco_inscription_year - migrated per Rule 53
+    - has_or_had_status  # was: unesco_list_status, viability_status - migrated per Rule 53
+    # REMOVED 2026-01-14: unesco_list_status, viability_status - migrated to has_or_had_status (Rule 53)
     - wikidata_id
     slot_usage:
       heritage_form_id:
@@ -166,12 +174,28 @@ classes:
         examples:
         - value: "Pride Amsterdam is the annual LGBTQ+ celebration featuring the famous \nCanal Parade through the historic\
             \ canals of Amsterdam. First held in \n1996, it represents Dutch values of tolerance and equality.\n"
-      unesco_domain:
+      # REMOVED 2026-01-14: unesco_domain - migrated to is_or_was_categorized_as with UNESCODomain
+      # unesco_domain:
+      #   required: true
+      #   range: UNESCOICHDomainEnum
+      #   multivalued: true
+      #   examples:
+      #   - value: SOCIAL_PRACTICES_RITUALS_FESTIVE_EVENTS
+      #     description: For festivals like Pride Amsterdam, Carnaval
+      is_or_was_categorized_as:
+        description: |
+          UNESCO ICH domain classification for this heritage form.
+          MIGRATED from unesco_domain per slot_fixes.yaml (Rule 53).
+        range: UNESCODomain
         required: true
-        range: UNESCOICHDomainEnum
         multivalued: true
+        inlined: true
+        inlined_as_list: true
         examples:
-        - value: SOCIAL_PRACTICES_RITUALS_FESTIVE_EVENTS
+        - value: |
+            UNESCODomain:
+              has_or_had_code: SOCIAL_PRACTICES_RITUALS_FESTIVE_EVENTS
+              domain_name: "Social practices, rituals and festive events"
           description: For festivals like Pride Amsterdam, Carnaval
       kien_url:
         required: false
@@ -183,17 +207,56 @@ classes:
         range: date
         examples:
         - value: '2019-04-15'
-      unesco_list_status:
+      # DEPRECATED: unesco_list_status - migrated to has_or_had_status (2026-01-14, Rule 53)
+      # unesco_list_status:
+      #   required: false
+      #   range: UNESCOListStatusEnum
+      #   examples:
+      #   - value: REPRESENTATIVE_LIST
+      #     description: For internationally recognized heritage
+      has_or_had_status:  # was: unesco_list_status, viability_status - migrated per Rule 53
+        description: |
+          Status information for this heritage form.
+          MIGRATED from unesco_list_status and viability_status per slot_fixes.yaml (Rule 53).
+          
+          Use UNESCOListStatus for UNESCO inscription status.
+          Use ViabilityStatus for viability/health assessment.
+        range: string  # polymorphic - narrowed in examples
+        multivalued: true
+        inlined_as_list: true
         required: false
-        range: UNESCOListStatusEnum
         examples:
-        - value: REPRESENTATIVE_LIST
-          description: For internationally recognized heritage
-      unesco_inscription_year:
+        - value: |
+            UNESCOListStatus:
+              has_or_had_code: REPRESENTATIVE_LIST
+              list_name: "Representative List of ICH of Humanity"
+              inscription_date: "2023-12-06"
+          description: UNESCO inscription status
+        - value: |
+            ViabilityStatus:
+              has_or_had_code: THRIVING
+              status_name: "Thriving"
+              assessment_date: "2024-12-01"
+              assessment_notes: "Strong community practice"
+          description: Viability status
+      # DEPRECATED: unesco_inscription_year - migrated to temporal_extent (2026-01-14, Rule 53)
+      # unesco_inscription_year:
+      #   required: false
+      #   range: integer
+      #   examples:
+      #   - value: 2017
+      temporal_extent:  # was: unesco_inscription_year - migrated per Rule 53
+        description: |
+          UNESCO inscription date using CIDOC-CRM TimeSpan.
+          MIGRATED from unesco_inscription_year per slot_fixes.yaml (Rule 53).
+          Use begin_of_the_begin with year-only precision for inscription year.
+        range: TimeSpan
+        inlined: true
         required: false
-        range: integer
         examples:
-        - value: 2017
+        - value:
+            begin_of_the_begin: '2017-01-01'
+          description: Inscribed on UNESCO list in 2017
       geographic_scope:
         required: false
         range: string
@@ -233,11 +296,13 @@ classes:
         range: string
         examples:
         - value: Community participation, annual festival organization, volunteer training
-      viability_status:
-        required: false
-        range: ICHViabilityStatusEnum
-        examples:
-        - value: THRIVING
+      # DEPRECATED: viability_status - migrated to has_or_had_status (2026-01-14, Rule 53)
+      # viability_status:
+      #   required: false
+      #   range: ICHViabilityStatusEnum
+      #   examples:
+      #   - value: THRIVING
+      # See has_or_had_status slot_usage above for migrated pattern
       threat:
         required: false
         range: string
@@ -293,8 +358,11 @@ classes:
         heritage_form_name: Pride Amsterdam
         heritage_form_description: "Annual LGBTQ+ celebration featuring the Canal Parade through Amsterdam's \nhistoric canals.\
           \ First held in 1996, it represents Dutch values of \ntolerance, equality, and freedom.\n"
-        unesco_domain:
-        - SOCIAL_PRACTICES_RITUALS_FESTIVE_EVENTS
+        # unesco_domain - MIGRATED to is_or_was_categorized_as (2026-01-14, Rule 53)
+        is_or_was_categorized_as:
+        - UNESCODomain:
+            has_or_had_code: SOCIAL_PRACTICES_RITUALS_FESTIVE_EVENTS
+            domain_name: "Social practices, rituals and festive events"
         kien_url: https://www.immaterieelerfgoed.nl/nl/pride-amsterdam
         geographic_scope:
         - Amsterdam
@@ -304,7 +372,12 @@ classes:
         safeguarded_by:
         - hc_id: https://nde.nl/ontology/hc/custodian/nl/amsterdam-gay-pride
         transmission_methods: Annual organization, volunteer networks, community participation
-        viability_status: THRIVING
+        # viability_status: THRIVING - MIGRATED to has_or_had_status (2026-01-14, Rule 53)
+        has_or_had_status:
+        - ViabilityStatus:
+            has_or_had_code: THRIVING
+            status_name: "Thriving"
+            assessment_date: "2024-12-01"
         safeguarding_measure:
         - Annual festival organization
         - Community engagement
diff --git a/schemas/20251121/linkml/modules/classes/InvestmentArea.yaml b/schemas/20251121/linkml/modules/classes/InvestmentArea.yaml
index 5d4584d793..3414565691 100644
--- a/schemas/20251121/linkml/modules/classes/InvestmentArea.yaml
+++ b/schemas/20251121/linkml/modules/classes/InvestmentArea.yaml
@@ -9,7 +9,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 
 classes:
@@ -20,7 +20,7 @@ classes:
       such as preservation, digitization, acquisitions, or infrastructure.
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
     annotations:
       specificity_score: "0.55"
diff --git a/schemas/20251121/linkml/modules/classes/MeasurementUnit.yaml b/schemas/20251121/linkml/modules/classes/MeasurementUnit.yaml
index 5b99ea84fc..af9136b292 100644
--- a/schemas/20251121/linkml/modules/classes/MeasurementUnit.yaml
+++ b/schemas/20251121/linkml/modules/classes/MeasurementUnit.yaml
@@ -10,7 +10,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 
 classes:
@@ -25,7 +25,7 @@ classes:
       and digital measurement units rather than physical measurement units.
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
     close_mappings:
       - schema:unitCode
diff --git a/schemas/20251121/linkml/modules/classes/MetadataStandardType.yaml b/schemas/20251121/linkml/modules/classes/MetadataStandardType.yaml
index 135f3abce2..381f10885d 100644
--- a/schemas/20251121/linkml/modules/classes/MetadataStandardType.yaml
+++ b/schemas/20251121/linkml/modules/classes/MetadataStandardType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   MetadataStandardType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/NetworkAnalysis.yaml b/schemas/20251121/linkml/modules/classes/NetworkAnalysis.yaml
index 11b901633c..ce95272fac 100644
--- a/schemas/20251121/linkml/modules/classes/NetworkAnalysis.yaml
+++ b/schemas/20251121/linkml/modules/classes/NetworkAnalysis.yaml
@@ -16,7 +16,9 @@ imports:
 - ../slots/heritage_relevant_percentage
 - ../slots/specificity_annotation
 - ../slots/template_specificity
-- ../slots/total_connections_extracted
+# REMOVED 2026-01-14: ../slots/total_connections_extracted - migrated to has_or_had_quantity with Quantity
+- ../slots/has_or_had_quantity
+- ./Quantity
 default_prefix: hc
 classes:
   NetworkAnalysis:
@@ -32,12 +34,27 @@ classes:
     - heritage_relevant_percentage
     - specificity_annotation
     - template_specificity
-    - total_connections_extracted
+    # REMOVED 2026-01-14: total_connections_extracted - migrated to has_or_had_quantity with Quantity
+    - has_or_had_quantity
     slot_usage:
-      total_connections_extracted:
-        range: integer
+      # REMOVED 2026-01-14: total_connections_extracted - migrated to has_or_had_quantity with Quantity
+      # total_connections_extracted:
+      #   range: integer
+      #   required: true
+      #   minimum_value: 0
+      has_or_had_quantity:
+        range: Quantity
+        inlined: true
+        description: |
+          Total number of connections extracted from this network.
+          MIGRATED 2026-01-14: Replaces total_connections_extracted slot.
         required: true
-        minimum_value: 0
+        examples:
+        - value: |
+            Quantity:
+              value: 776
+              unit: "connections"
+          description: Total connections extracted
       heritage_relevant_count:
         range: integer
         required: true
diff --git a/schemas/20251121/linkml/modules/classes/OrganizationalChangeEvent.yaml b/schemas/20251121/linkml/modules/classes/OrganizationalChangeEvent.yaml
index 6e20c1778e..354cc68bf8 100644
--- a/schemas/20251121/linkml/modules/classes/OrganizationalChangeEvent.yaml
+++ b/schemas/20251121/linkml/modules/classes/OrganizationalChangeEvent.yaml
@@ -357,12 +357,14 @@ classes:
           latitude: 52.3676
           longitude: 4.8913
           geometry_type: POLYGON
-          valid_to_geo: '2025-06-01'
+          temporal_extent:  # was: valid_to_geo
+            end_of_the_end: '2025-06-01'
         - geospatial_id: https://nde.nl/ontology/hc/geo/amstel-campus-building-a
           latitude: 52.3545
           longitude: 4.9123
           geometry_type: POLYGON
-          valid_from_geo: '2025-06-01'
+          temporal_extent:  # was: valid_from_geo
+            begin_of_the_begin: '2025-06-01'
         staff_impact: All 45 FTE relocating to new facility. No redundancies.
         documentation_source: https://www.amsterdam.nl/nieuws/museum-verhuizing-2025
         valid_from: '2025-06-01'
diff --git a/schemas/20251121/linkml/modules/classes/OrganizationalStructure.yaml b/schemas/20251121/linkml/modules/classes/OrganizationalStructure.yaml
index 3c7e32bcf8..07b062444a 100644
--- a/schemas/20251121/linkml/modules/classes/OrganizationalStructure.yaml
+++ b/schemas/20251121/linkml/modules/classes/OrganizationalStructure.yaml
@@ -13,7 +13,7 @@ imports:
 - ./Custodian
 - ./OrganizationalUnitType
 - ../slots/located_at
-- ../slots/unit_name
+- ../slots/has_or_had_label  # was: unit_name - migrated per Rule 53
 - ../slots/has_or_had_type
 - ../slots/parent_unit
 - ../slots/staff_count
@@ -61,7 +61,7 @@ classes:
     - staff_count
     - has_or_had_staff_member
     - template_specificity
-    - unit_name
+    - has_or_had_label  # was: unit_name
     - has_or_had_type
     - temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
     slot_usage:
@@ -71,7 +71,7 @@ classes:
         examples:
         - value: https://nde.nl/ontology/hc/org-unit/na-digital-preservation
           description: URI for National Archives Digital Preservation Dept
-      unit_name:
+      has_or_had_label:  # was: unit_name
         required: true
         range: string
         examples:
diff --git a/schemas/20251121/linkml/modules/classes/Overview.yaml b/schemas/20251121/linkml/modules/classes/Overview.yaml
index bc759fc746..e4284122ad 100644
--- a/schemas/20251121/linkml/modules/classes/Overview.yaml
+++ b/schemas/20251121/linkml/modules/classes/Overview.yaml
@@ -37,7 +37,7 @@ imports:
   - ../slots/id
   - ../slots/name
   - ../slots/description
-  - ../slots/title
+  - ../slots/has_or_had_label  # was: title - migrated per Rule 53
   - ../slots/includes_or_included
   - ../slots/valid_from
   - ../slots/valid_to
@@ -104,7 +104,7 @@ classes:
     slots:
       - id
       - name
-      - title
+      - has_or_had_label  # was: title
       - description
       - includes_or_included
       - source_url
@@ -123,7 +123,7 @@ classes:
         range: string
         description: >-
           Short name for the overview collection.
-      title:
+      has_or_had_label:  # was: title
         range: string
         description: >-
           Descriptive title for the overview.
diff --git a/schemas/20251121/linkml/modules/classes/PersonName.yaml b/schemas/20251121/linkml/modules/classes/PersonName.yaml
index ba74849bac..0dee111b5a 100644
--- a/schemas/20251121/linkml/modules/classes/PersonName.yaml
+++ b/schemas/20251121/linkml/modules/classes/PersonName.yaml
@@ -14,7 +14,9 @@ imports:
 - ../slots/literal_name
 - ../slots/given_name
 - ../slots/base_surname
-- ../slots/surname_prefix
+# REMOVED 2026-01-14: ../slots/surname_prefix - migrated to has_or_had_label with Label
+- ../slots/has_or_had_label
+- ./Label
 - ../slots/patronym
 - ../slots/initial
 - ../slots/name_specification
@@ -76,7 +78,8 @@ classes:
     - name_specification
     - patronym
     - specificity_annotation
-    - surname_prefix
+    # REMOVED 2026-01-14: surname_prefix - migrated to has_or_had_label with Label
+    - has_or_had_label
     - template_specificity
     slot_usage:
       literal_name:
@@ -86,8 +89,21 @@ classes:
         range: string
       base_surname:
         range: string
-      surname_prefix:
-        range: string
+      # REMOVED 2026-01-14: surname_prefix - migrated to has_or_had_label with Label
+      # surname_prefix:
+      #   range: string
+      has_or_had_label:
+        range: Label
+        inlined: true
+        description: |
+          Surname prefix (e.g., "van", "de", "van der" in Dutch names).
+          MIGRATED 2026-01-14: Replaces surname_prefix slot.
+        examples:
+        - value: |
+            Label:
+              label_value: "van der"
+              label_type: "surname_prefix"
+          description: Dutch surname prefix
       patronym:
         range: string
       initial:
diff --git a/schemas/20251121/linkml/modules/classes/ProgramType.yaml b/schemas/20251121/linkml/modules/classes/ProgramType.yaml
index 496bdc39a1..e82d6f4a4e 100644
--- a/schemas/20251121/linkml/modules/classes/ProgramType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ProgramType.yaml
@@ -17,7 +17,7 @@ default_prefix: hc
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 
 classes:
@@ -36,7 +36,7 @@ classes:
       
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
     
     exact_mappings:
@@ -49,5 +49,5 @@ classes:
     examples:
       - value:
           type_id: https://nde.nl/program-type/volunteer
-          type_label: ["Volunteer@en", "vrijwilliger@nl"]
+          has_or_had_label:  # was: type_label ["Volunteer@en", "vrijwilliger@nl"]
         description: Volunteer program type
diff --git a/schemas/20251121/linkml/modules/classes/ReadingRoom.yaml b/schemas/20251121/linkml/modules/classes/ReadingRoom.yaml
index 3230838e25..97f1af56e8 100644
--- a/schemas/20251121/linkml/modules/classes/ReadingRoom.yaml
+++ b/schemas/20251121/linkml/modules/classes/ReadingRoom.yaml
@@ -13,7 +13,9 @@ imports:
 - ../slots/reading_room_type
 - ../slots/seating_capacity
 - ../slots/has_computer_terminal
-- ../slots/terminal_count
+# REMOVED 2026-01-14: ../slots/terminal_count - migrated to has_or_had_quantity with Quantity
+- ../slots/has_or_had_quantity
+- ./Quantity
 - ../slots/has_microfilm_reader
 - ../slots/has_wifi
 - ../slots/requires_registration
@@ -91,7 +93,8 @@ classes:
     - seating_capacity
     - specificity_annotation
     - template_specificity
-    - terminal_count
+    # REMOVED 2026-01-14: terminal_count - migrated to has_or_had_quantity
+    - has_or_had_quantity
     - was_derived_from
     - was_generated_by
     slot_usage:
@@ -138,11 +141,27 @@ classes:
         examples:
         - value: true
           description: Has computer access
-      terminal_count:
-        range: integer
+      # REMOVED 2026-01-14: terminal_count - migrated to has_or_had_quantity
+      # terminal_count:
+      #   range: integer
+      #   examples:
+      #   - value: 12
+      #     description: 12 terminals available
+      has_or_had_quantity:
+        range: Quantity
+        required: false
+        inlined: true
+        description: |
+          Number of computer terminals available.
+          MIGRATED 2026-01-14: Replaces terminal_count slot.
         examples:
-        - value: 12
-          description: 12 terminals available
+        - value:
+            quantity_value: 12
+            quantity_type: TERMINAL_COUNT
+            has_or_had_measurement_unit:
+              unit_type: TERMINAL
+              unit_symbol: "terminals"
+          description: 12 computer terminals available
       has_microfilm_reader:
         range: boolean
         examples:
diff --git a/schemas/20251121/linkml/modules/classes/ResponseFormatType.yaml b/schemas/20251121/linkml/modules/classes/ResponseFormatType.yaml
index a3fbfcba16..f755d364fb 100644
--- a/schemas/20251121/linkml/modules/classes/ResponseFormatType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ResponseFormatType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   ResponseFormatType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/ResponsibilityType.yaml b/schemas/20251121/linkml/modules/classes/ResponsibilityType.yaml
index fd53724a21..bf714effd7 100644
--- a/schemas/20251121/linkml/modules/classes/ResponsibilityType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ResponsibilityType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   ResponsibilityType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/ScopeType.yaml b/schemas/20251121/linkml/modules/classes/ScopeType.yaml
index 95e0a90fc8..ecba5004dc 100644
--- a/schemas/20251121/linkml/modules/classes/ScopeType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ScopeType.yaml
@@ -25,7 +25,7 @@ imports:
   - linkml:types
   - ../slots/type_description
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/wikidata_entity
   - ../slots/specificity_annotation
   - ../slots/template_specificity
@@ -104,7 +104,7 @@ classes:
       - template_specificity
       - type_description
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - wikidata_entity
     
     slot_usage:
@@ -119,7 +119,7 @@ classes:
           - value: https://nde.nl/ontology/hc/scope-type/spatial
             description: Spatial scope type
       
-      type_label:
+      has_or_had_label:  # was: type_label
         range: string
         required: true
         multivalued: true
@@ -158,7 +158,7 @@ classes:
     examples:
       - value:
           type_id: https://nde.nl/ontology/hc/scope-type/temporal
-          type_label:
+          has_or_had_label:  # was: type_label
             - Temporal@en
             - temporeel@nl
           type_description: "Time-based scope dimension"
diff --git a/schemas/20251121/linkml/modules/classes/ServiceArea.yaml b/schemas/20251121/linkml/modules/classes/ServiceArea.yaml
index c96211289d..dabf859305 100644
--- a/schemas/20251121/linkml/modules/classes/ServiceArea.yaml
+++ b/schemas/20251121/linkml/modules/classes/ServiceArea.yaml
@@ -152,7 +152,8 @@ classes:
         - geospatial_id: https://nde.nl/ontology/hc/geo/nha-boundary
           geometry_type: MULTIPOLYGON
           geometry_wkt: MULTIPOLYGON(((4.5 52.2, 5.0 52.2, 5.0 52.5, 4.5 52.5, 4.5 52.2)))
-          valid_from_geo: '2001-01-01'
+          temporal_extent:  # was: valid_from_geo
+            begin_of_the_begin: '2001-01-01'
         is_historical_boundary: false
         served_by: https://nde.nl/ontology/hc/legal/noord-hollands-archief
       description: Current service area for Noord-Hollands Archief
@@ -167,8 +168,9 @@ classes:
         - geospatial_id: https://nde.nl/ontology/hc/geo/vianen-1500
           geometry_type: POLYGON
           source_dataset: HALC
-          valid_from_geo: '1500-01-01'
-          valid_to_geo: '1795-01-01'
+          temporal_extent:  # was: valid_from_geo + valid_to_geo
+            begin_of_the_begin: '1500-01-01'
+            end_of_the_end: '1795-01-01'
         is_historical_boundary: true
         temporal_extent:
           begin_of_the_begin: '1500-01-01'
diff --git a/schemas/20251121/linkml/modules/classes/ServiceType.yaml b/schemas/20251121/linkml/modules/classes/ServiceType.yaml
index 9a62935b8e..8fa626c692 100644
--- a/schemas/20251121/linkml/modules/classes/ServiceType.yaml
+++ b/schemas/20251121/linkml/modules/classes/ServiceType.yaml
@@ -17,7 +17,7 @@ default_prefix: hc
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 
 classes:
@@ -36,7 +36,7 @@ classes:
       
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
     
     exact_mappings:
diff --git a/schemas/20251121/linkml/modules/classes/SocialMediaContent.yaml b/schemas/20251121/linkml/modules/classes/SocialMediaContent.yaml
index 358c144859..67b6c0d0da 100644
--- a/schemas/20251121/linkml/modules/classes/SocialMediaContent.yaml
+++ b/schemas/20251121/linkml/modules/classes/SocialMediaContent.yaml
@@ -23,7 +23,7 @@ imports:
 - ../slots/tag
 - ../slots/template_specificity
 - ../slots/thumbnail_url
-- ../slots/title
+- ../slots/has_or_had_label  # was: title - migrated per Rule 53
 - ../slots/updated_at
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
@@ -89,7 +89,7 @@ classes:
     - tag
     - template_specificity
     - thumbnail_url
-    - title
+    - has_or_had_label  # was: title
     - updated_at
     slot_usage:
       content_id:
@@ -118,7 +118,7 @@ classes:
         examples:
         - value: https://nde.nl/ontology/hc/social-media/nationaal-onderduikmuseum-youtube
           description: Museum's YouTube channel profile
-      title:
+      has_or_had_label:  # was: title
         range: string
         required: false
         examples:
diff --git a/schemas/20251121/linkml/modules/classes/SocialMediaPost.yaml b/schemas/20251121/linkml/modules/classes/SocialMediaPost.yaml
index d5135bdb6a..033bd117d7 100644
--- a/schemas/20251121/linkml/modules/classes/SocialMediaPost.yaml
+++ b/schemas/20251121/linkml/modules/classes/SocialMediaPost.yaml
@@ -12,7 +12,7 @@ imports:
 - ../slots/has_or_had_api_endpoint
 - ../slots/description
 - ../slots/platform_type
-- ../slots/title
+- ../slots/has_or_had_label  # was: title - migrated per Rule 53
 - ../slots/has_api_version
 - ../slots/content_category
 - ../slots/is_official_content
@@ -103,7 +103,7 @@ classes:
     - tag
     - template_specificity
     - thumbnail_url
-    - title
+    - has_or_had_label  # was: title
     - updated_at
     slot_usage:
       post_id:
@@ -146,7 +146,7 @@ classes:
         examples:
         - value: https://nde.nl/ontology/hc/social-media/nationaal-onderduikmuseum-youtube
           description: Museum's YouTube channel profile
-      title:
+      has_or_had_label:  # was: title
         range: string
         required: false
         examples:
diff --git a/schemas/20251121/linkml/modules/classes/StaffRole.yaml b/schemas/20251121/linkml/modules/classes/StaffRole.yaml
index 0ba4d31ddf..14a8af845e 100644
--- a/schemas/20251121/linkml/modules/classes/StaffRole.yaml
+++ b/schemas/20251121/linkml/modules/classes/StaffRole.yaml
@@ -28,7 +28,9 @@ imports:
 - ../slots/role_name_local
 - ../slots/specificity_annotation
 - ../slots/template_specificity
-- ../slots/typical_responsibility
+# REMOVED 2026-01-14: ../slots/typical_responsibility - migrated to has_or_had_responsibility with Responsibility
+- ../slots/has_or_had_responsibility
+- ./Responsibility
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ../enums/RoleCategoryEnum
@@ -166,7 +168,8 @@ classes:
     - template_specificity
     - temporal_extent
     - typical_domain
-    - typical_responsibility
+    # REMOVED 2026-01-14: typical_responsibility - migrated to has_or_had_responsibility with Responsibility
+    - has_or_had_responsibility
     slot_usage:
       role_id:
         identifier: true
diff --git a/schemas/20251121/linkml/modules/classes/StorageConditionPolicy.yaml b/schemas/20251121/linkml/modules/classes/StorageConditionPolicy.yaml
index a74ba47144..8bd43803ad 100644
--- a/schemas/20251121/linkml/modules/classes/StorageConditionPolicy.yaml
+++ b/schemas/20251121/linkml/modules/classes/StorageConditionPolicy.yaml
@@ -43,7 +43,9 @@ imports:
 - ../slots/temperature_min
 - ../slots/temperature_target
 - ../slots/template_specificity
-- ../slots/uv_filtered_required
+# REMOVED 2026-01-14: ../slots/uv_filtered_required - migrated to is_or_was_required with RequirementStatus
+- ../slots/is_or_was_required
+- ./RequirementStatus
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ./Approver  # Added for is_or_was_approved_by migration (2026-01-15)
@@ -107,7 +109,8 @@ classes:
     - temperature_target
     - temperature_tolerance
     - template_specificity
-    - uv_filtered_required
+    # REMOVED 2026-01-14: uv_filtered_required - migrated to is_or_was_required with RequirementStatus
+    - is_or_was_required
     slot_usage:
       policy_id:
         range: uriorcurie
@@ -186,10 +189,23 @@ classes:
         examples:
         - value: 50.0
           description: 50 lux max for sensitive materials
-      uv_filtered_required:
-        range: boolean
+      # REMOVED 2026-01-14: uv_filtered_required - migrated to is_or_was_required with RequirementStatus
+      # uv_filtered_required:
+      #   range: boolean
+      #   examples:
+      #   - value: true
+      is_or_was_required:
+        range: RequirementStatus
+        inlined: true
+        description: |
+          Whether UV-filtered lighting is required for this storage policy.
+          MIGRATED 2026-01-14: Replaces uv_filtered_required slot.
         examples:
-        - value: true
+        - value: |
+            RequirementStatus:
+              is_required: true
+              requirement_type: "uv_filtered_lighting"
+          description: UV filtering required
       has_air_changes_per_hour:
         range: float
         examples:
@@ -284,7 +300,9 @@ classes:
         humidity_target: 50.0
         humidity_tolerance: 5.0
         light_max_lux: 50.0
-        uv_filtered_required: true
+        is_or_was_required:  # was: uv_filtered_required
+          is_required: true
+          requirement_type: uv_filtered_lighting
         pest_management_required: true
         fire_suppression_type: INERT_GAS
         flood_protection_required: true
@@ -312,7 +330,9 @@ classes:
         humidity_target: 30.0
         humidity_tolerance: 5.0
         light_max_lux: 0.0
-        uv_filtered_required: true
+        is_or_was_required:  # was: uv_filtered_required
+          is_required: true
+          requirement_type: uv_filtered_lighting
         pest_management_required: true
         fire_suppression_type: INERT_GAS
         flood_protection_required: true
diff --git a/schemas/20251121/linkml/modules/classes/StorageUnit.yaml b/schemas/20251121/linkml/modules/classes/StorageUnit.yaml
index c921044f37..64e36d545d 100644
--- a/schemas/20251121/linkml/modules/classes/StorageUnit.yaml
+++ b/schemas/20251121/linkml/modules/classes/StorageUnit.yaml
@@ -14,7 +14,7 @@ imports:
 - linkml:types
 - ./Storage
 - ../enums/StorageUnitTypeEnum
-- ../slots/unit_name
+- ../slots/has_or_had_label  # was: unit_name - migrated per Rule 53
 - ../slots/unit_type
 - ../slots/capacity_item
 # REMOVED - migrated to has_or_had_identifier with range BayNumber (Rule 53)
@@ -104,7 +104,7 @@ classes:
     # REMOVED - migrated to has_or_had_identifier (2026-01-14, Rule 53)
     # - unit_id
     # - unit_identifier
-    - unit_name
+    - has_or_had_label  # was: unit_name
     - unit_type
     - temporal_extent  # was: valid_from + valid_to - migrated per Rule 53
     slot_usage:
@@ -122,7 +122,7 @@ classes:
       #   - value: BOX-2024-00145
       #   - value: FF-MAPS-042
       #   - value: RACK-TEXT-A12
-      unit_name:
+      has_or_had_label:  # was: unit_name
         range: string
         examples:
         - value: Archive Box 145 - WWII Correspondence
diff --git a/schemas/20251121/linkml/modules/classes/TasteScentHeritageType.yaml b/schemas/20251121/linkml/modules/classes/TasteScentHeritageType.yaml
index 831ba0dddc..ce726d48cb 100644
--- a/schemas/20251121/linkml/modules/classes/TasteScentHeritageType.yaml
+++ b/schemas/20251121/linkml/modules/classes/TasteScentHeritageType.yaml
@@ -24,7 +24,9 @@ imports:
 - ../slots/specificity_annotation
 - ../slots/taste_scent_subtype
 - ../slots/template_specificity
-- ../slots/traditional_product
+# REMOVED 2026-01-14: ../slots/traditional_product - migrated to has_or_had_type with TraditionalProductType
+- ../slots/has_or_had_type
+- ./TraditionalProductType
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 prefixes:
@@ -210,7 +212,8 @@ classes:
     - specificity_annotation
     - taste_scent_subtype
     - template_specificity
-    - traditional_product
+    # REMOVED 2026-01-14: traditional_product - migrated to has_or_had_type with TraditionalProductType
+    - has_or_had_type
     slot_usage:
       heritage_practice:
         range: string
diff --git a/schemas/20251121/linkml/modules/classes/TaxonName.yaml b/schemas/20251121/linkml/modules/classes/TaxonName.yaml
new file mode 100644
index 0000000000..784101c215
--- /dev/null
+++ b/schemas/20251121/linkml/modules/classes/TaxonName.yaml
@@ -0,0 +1,110 @@
+# TaxonName - Scientific taxonomic name class
+#
+# Created per slot_fixes.yaml migration for: taxon_name
+# Creation date: 2026-01-14
+# Rule compliance: 0b (Type/Types pattern), 38 (slot centralization), 53 (full migration)
+
+id: https://nde.nl/ontology/hc/class/TaxonName
+name: TaxonName
+title: Taxon Name
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+  dwc: http://rs.tdwg.org/dwc/terms/
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  - ../slots/has_or_had_label
+  - ../slots/has_or_had_code
+
+classes:
+  TaxonName:
+    class_uri: dwc:Taxon
+    description: |
+      A scientific taxonomic name (Linnaean binomial or trinomial).
+      
+      **PURPOSE**:
+      Structured representation of scientific names following taxonomic nomenclature
+      standards (ICZN for animals, ICN for plants/fungi/algae).
+      
+      **FORMAT**:
+      - Binomial: "Genus species (Author, Year)"
+      - Trinomial: "Genus species subspecies Author, Year"
+      - With authority: "Raphus cucullatus (Linnaeus, 1758)"
+      - Without authority: "Panthera leo"
+      
+      **DARWIN CORE ALIGNMENT**:
+      - Aligns with dwc:scientificName
+      - Supports dwc:scientificNameAuthorship
+      
+      **MIGRATION NOTE**:
+      Created to replace string-based taxon_name slot per slot_fixes.yaml (Rule 53).
+      
+    exact_mappings:
+      - dwc:Taxon
+    
+    close_mappings:
+      - skos:Concept
+    
+    slots:
+      - has_or_had_label
+      - has_or_had_code
+    
+    attributes:
+      scientific_name:
+        description: |
+          Full scientific name including author citation.
+          Format: "Genus species (Author, Year)"
+        range: string
+        required: true
+        slot_uri: dwc:scientificName
+        examples:
+          - value: "Raphus cucullatus (Linnaeus, 1758)"
+            description: Dodo with nomenclatural authority
+          - value: "Panthera leo"
+            description: Lion (authority omitted)
+      
+      authorship:
+        description: |
+          The authorship information for this scientific name.
+          Parentheses indicate original genus differs from current placement.
+        range: string
+        required: false
+        slot_uri: dwc:scientificNameAuthorship
+        examples:
+          - value: "Linnaeus, 1758"
+          - value: "(Gray, 1821)"
+            description: Parentheses indicate genus changed
+      
+      taxonomic_rank:
+        description: |
+          Taxonomic rank of this name (SPECIES, GENUS, FAMILY, etc.).
+        range: string
+        required: false
+        slot_uri: dwc:taxonRank
+        examples:
+          - value: SPECIES
+          - value: SUBSPECIES
+          - value: GENUS
+    
+    annotations:
+      specificity_score: "0.70"
+      specificity_rationale: "Specific to natural history collections - taxonomic nomenclature."
+      custodian_types: '["B", "M", "R"]'
+      custodian_types_rationale: "Botanical gardens, Museums (natural history), Research centers"
+    
+    examples:
+      - value:
+          scientific_name: "Raphus cucullatus (Linnaeus, 1758)"
+          authorship: "Linnaeus, 1758"
+          taxonomic_rank: "SPECIES"
+        description: Dodo scientific name with full authority
+      - value:
+          scientific_name: "Quercus robur L."
+          authorship: "L."
+          taxonomic_rank: "SPECIES"
+        description: English Oak with abbreviated author
diff --git a/schemas/20251121/linkml/modules/classes/TechnicalFeatureType.yaml b/schemas/20251121/linkml/modules/classes/TechnicalFeatureType.yaml
index 031aa64fef..451737b87f 100644
--- a/schemas/20251121/linkml/modules/classes/TechnicalFeatureType.yaml
+++ b/schemas/20251121/linkml/modules/classes/TechnicalFeatureType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   TechnicalFeatureType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/TitleType.yaml b/schemas/20251121/linkml/modules/classes/TitleType.yaml
index b0f96598b6..704db1fbda 100644
--- a/schemas/20251121/linkml/modules/classes/TitleType.yaml
+++ b/schemas/20251121/linkml/modules/classes/TitleType.yaml
@@ -17,7 +17,7 @@ default_prefix: hc
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 
 classes:
@@ -35,7 +35,7 @@ classes:
       
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
     
     exact_mappings:
diff --git a/schemas/20251121/linkml/modules/classes/TraditionalProductType.yaml b/schemas/20251121/linkml/modules/classes/TraditionalProductType.yaml
index 3f202e0edc..ac1b7c0832 100644
--- a/schemas/20251121/linkml/modules/classes/TraditionalProductType.yaml
+++ b/schemas/20251121/linkml/modules/classes/TraditionalProductType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   TraditionalProductType:
@@ -17,5 +17,5 @@ classes:
     description: Type of traditional product
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/UNESCODomainType.yaml b/schemas/20251121/linkml/modules/classes/UNESCODomainType.yaml
index 32a0e78a04..fb10f0a5bd 100644
--- a/schemas/20251121/linkml/modules/classes/UNESCODomainType.yaml
+++ b/schemas/20251121/linkml/modules/classes/UNESCODomainType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   UNESCODomainType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/UserCommunityType.yaml b/schemas/20251121/linkml/modules/classes/UserCommunityType.yaml
index f9c4ae6661..57a8c5edd2 100644
--- a/schemas/20251121/linkml/modules/classes/UserCommunityType.yaml
+++ b/schemas/20251121/linkml/modules/classes/UserCommunityType.yaml
@@ -17,7 +17,7 @@ default_prefix: hc
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 
 classes:
@@ -36,7 +36,7 @@ classes:
       
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
     
     exact_mappings:
diff --git a/schemas/20251121/linkml/modules/classes/VenueType.yaml b/schemas/20251121/linkml/modules/classes/VenueType.yaml
index c632940a10..276bf56320 100644
--- a/schemas/20251121/linkml/modules/classes/VenueType.yaml
+++ b/schemas/20251121/linkml/modules/classes/VenueType.yaml
@@ -8,7 +8,7 @@ prefixes:
 imports:
   - linkml:types
   - ../slots/type_id
-  - ../slots/type_label
+  - ../slots/has_or_had_label  # was: type_label - migrated per Rule 53
   - ../slots/type_description
 classes:
   VenueType:
@@ -16,5 +16,5 @@ classes:
     abstract: true
     slots:
       - type_id
-      - type_label
+      - has_or_had_label  # was: type_label
       - type_description
diff --git a/schemas/20251121/linkml/modules/classes/VideoAnnotationTypes.yaml b/schemas/20251121/linkml/modules/classes/VideoAnnotationTypes.yaml
index 5bba5701dc..c7b5477911 100644
--- a/schemas/20251121/linkml/modules/classes/VideoAnnotationTypes.yaml
+++ b/schemas/20251121/linkml/modules/classes/VideoAnnotationTypes.yaml
@@ -56,11 +56,11 @@ imports:
 - ../slots/specificity_annotation
 - ../slots/template_specificity
 - ../slots/text_languages_detected
-- ../slots/text_region_count
+# REMOVED 2026-01-14: ../slots/text_region_count - migrated to has_or_had_quantity with Quantity
 - ../slots/has_or_had_text_region
 - ../slots/has_or_had_text_segment
 - ../slots/text_types_detected
-- ../slots/total_characters_extracted
+# REMOVED 2026-01-14: ../slots/total_characters_extracted - migrated to has_or_had_quantity with Quantity
 # Removed: ../slots/tracking_ids_assigned - MIGRATED to has_or_had_quantity (2026-01-14)
 - ../slots/transition_types_detected
 - ./SpecificityAnnotation
@@ -500,15 +500,16 @@ classes:
     slots:
     - full_extracted_text
     - handwriting_confidence
+    - has_or_had_quantity  # ADDED 2026-01-14: replaces text_region_count and total_characters_extracted
     - includes_handwriting
     - specificity_annotation
     - template_specificity
     - text_languages_detected
-    - text_region_count
+    # REMOVED 2026-01-14: text_region_count - migrated to has_or_had_quantity
     - has_or_had_text_region
     - has_or_had_text_segment
     - text_types_detected
-    - total_characters_extracted
+    # REMOVED 2026-01-14: total_characters_extracted - migrated to has_or_had_quantity
     slot_usage:
       has_or_had_text_segment:
         range: VideoTimeSegment
@@ -538,19 +539,31 @@ classes:
         examples:
         - value: '[nl, en, la]'
           description: Dutch, English, and Latin text detected
-      text_region_count:
-        range: integer
+      # REMOVED 2026-01-14: text_region_count - migrated to has_or_had_quantity
+      # REMOVED 2026-01-14: total_characters_extracted - migrated to has_or_had_quantity
+      has_or_had_quantity:
+        range: Quantity
+        multivalued: true
         required: false
-        minimum_value: 0
+        inlined_as_list: true
+        description: |
+          Quantitative measurements for OCR annotation.
+          MIGRATED 2026-01-14: Replaces text_region_count and total_characters_extracted slots.
+          Use quantity_type to distinguish: REGION_COUNT or CHARACTER_COUNT.
         examples:
-        - value: 28
+        - value:
+            quantity_value: 28
+            quantity_type: REGION_COUNT
+            has_or_had_measurement_unit:
+              unit_type: TEXT_REGION
+              unit_symbol: "regions"
           description: 28 text regions detected
-      total_characters_extracted:
-        range: integer
-        required: false
-        minimum_value: 0
-        examples:
-        - value: 3456
+        - value:
+            quantity_value: 3456
+            quantity_type: CHARACTER_COUNT
+            has_or_had_measurement_unit:
+              unit_type: CHARACTER
+              unit_symbol: "characters"
           description: 3,456 characters extracted
       includes_handwriting:
         range: boolean
diff --git a/schemas/20251121/linkml/modules/classes/VideoChapterList.yaml b/schemas/20251121/linkml/modules/classes/VideoChapterList.yaml
index 5b4c295e7c..0212aa139d 100644
--- a/schemas/20251121/linkml/modules/classes/VideoChapterList.yaml
+++ b/schemas/20251121/linkml/modules/classes/VideoChapterList.yaml
@@ -14,7 +14,9 @@ imports:
 - ../slots/has_or_had_identifier
 - ./VideoIdentifier
 - ../slots/has_or_had_chapter
-- ../slots/total_chapter
+# REMOVED 2026-01-14: ../slots/total_chapter - migrated to has_or_had_quantity with Quantity
+- ../slots/has_or_had_quantity
+- ./Quantity
 - ../slots/chapters_source
 - ../slots/chapters_generated_at
 - ../slots/covers_full_video
@@ -49,9 +51,10 @@ classes:
     - chapters_generated_at
     - chapters_source
     - covers_full_video
+    - has_or_had_quantity  # ADDED 2026-01-14: replaces total_chapter
     - specificity_annotation
     - template_specificity
-    - total_chapter
+    # REMOVED 2026-01-14: total_chapter - migrated to has_or_had_quantity
     # REMOVED - migrated to has_or_had_identifier (2026-01-14, Rule 53)
     # - video_id
     - has_or_had_identifier
@@ -73,10 +76,26 @@ classes:
         multivalued: true
         required: true
         inlined_as_list: true
-      total_chapter:
-        range: integer
+      # REMOVED 2026-01-14: total_chapter - migrated to has_or_had_quantity
+      # total_chapter:
+      #   range: integer
+      #   required: false
+      #   minimum_value: 0
+      has_or_had_quantity:
+        range: Quantity
         required: false
-        minimum_value: 0
+        inlined: true
+        description: |
+          Total number of chapters in this list.
+          MIGRATED 2026-01-14: Replaces total_chapter slot.
+        examples:
+        - value:
+            quantity_value: 12
+            quantity_type: CHAPTER_COUNT
+            has_or_had_measurement_unit:
+              unit_type: CHAPTER
+              unit_symbol: "chapters"
+          description: 12 chapters in this video
       chapters_source:
         range: ChapterSourceEnum
         required: false
diff --git a/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml b/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml
index 9c28bddd90..184ecdab50 100644
--- a/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml
+++ b/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml
@@ -20,7 +20,7 @@ imports:
 - ../slots/template_specificity
 - ../slots/has_or_had_identifier  # MIGRATED: was ../slots/track_id (2026-01-14)
 - ./TrackIdentifier  # Added for has_or_had_identifier migration
-- ../slots/track_name
+- ../slots/has_or_had_label  # was: track_name - migrated per Rule 53
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ./AutoGeneration  # Added for is_or_was_created_through migration (2026-01-15)
@@ -242,7 +242,7 @@ classes:
     - subtitle_format
     - template_specificity
     - has_or_had_identifier  # MIGRATED: was track_id (2026-01-14)
-    - track_name
+    - has_or_had_label  # was: track_name
     slot_usage:
       has_or_had_segment:
         required: true
@@ -312,7 +312,7 @@ classes:
         examples:
         - value: true
           description: YouTube auto-generated caption
-      track_name:
+      has_or_had_label:  # was: track_name
         range: string
         required: false
         examples:
diff --git a/schemas/20251121/linkml/modules/classes/VideoTextContent.yaml b/schemas/20251121/linkml/modules/classes/VideoTextContent.yaml
index ee751e071a..26c6471f9d 100644
--- a/schemas/20251121/linkml/modules/classes/VideoTextContent.yaml
+++ b/schemas/20251121/linkml/modules/classes/VideoTextContent.yaml
@@ -19,7 +19,9 @@ imports:
 - ../slots/source_video_url
 - ../slots/specificity_annotation
 - ../slots/template_specificity
-- ../slots/verification_date
+- ../slots/temporal_extent  # was: verification_date - migrated per Rule 53
+- ./TimeSpan
+# REMOVED 2026-01-14: verification_date - migrated to temporal_extent (Rule 53)
 # REMOVED: ../slots/verified_by - migrated to is_or_was_verified_by with Verifier (2026-01-14, Rule 53)
 - ../slots/is_or_was_verified_by
 - ./Verifier
@@ -88,7 +90,7 @@ classes:
     - source_video_url
     - specificity_annotation
     - template_specificity
-    - verification_date
+    - temporal_extent  # was: verification_date - migrated per Rule 53
     # REMOVED: verified_by - migrated to is_or_was_verified_by with Verifier (2026-01-14, Rule 53)
     - is_or_was_verified_by
     # REMOVED: word_count - migrated to has_or_had_quantity with WordCount (2026-01-14, Rule 53)
@@ -196,11 +198,24 @@ classes:
             verifier_name: curator@rijksmuseum.nl
             verifier_type: PERSON
           description: Staff member who verified
-      verification_date:
-        range: datetime
+      # DEPRECATED: verification_date - migrated to temporal_extent with TimeSpan (2026-01-14, Rule 53)
+      # verification_date:
+      #   range: datetime
+      #   required: false
+      #   examples:
+      #   - value: '2025-12-02T15:00:00Z'
+      #     description: Verified December 2, 2025
+      temporal_extent:  # was: verification_date - migrated per Rule 53
+        description: |
+          Verification date using CIDOC-CRM TimeSpan.
+          MIGRATED from verification_date per slot_fixes.yaml (Rule 53).
+          Use begin_of_the_begin for the verification timestamp.
+        range: TimeSpan
+        inlined: true
         required: false
         examples:
-        - value: '2025-12-02T15:00:00Z'
+        - value:
+            begin_of_the_begin: '2025-12-02T15:00:00Z'
           description: Verified December 2, 2025
       processing_duration_seconds:
         range: float
diff --git a/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml b/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml
index 31cbf44427..235abb56fd 100644
--- a/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml
+++ b/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml
@@ -16,7 +16,9 @@ imports:
 - ../slots/speaker_count
 - ../slots/specificity_annotation
 - ../slots/template_specificity
-- ../slots/transcript_format
+# REMOVED 2026-01-14: ../slots/transcript_format - migrated to has_or_had_format with TranscriptFormat
+- ../slots/has_or_had_format
+- ./TranscriptFormat
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 - ../enums/TranscriptFormatEnum
@@ -80,7 +82,8 @@ classes:
     - speaker_count
     - specificity_annotation
     - template_specificity
-    - transcript_format
+    # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormat
+    - has_or_had_format
     slot_usage:
       full_text:
         range: string
@@ -102,10 +105,18 @@ classes:
 
             '
           description: Transcript with speaker labels
-      transcript_format:
-        range: TranscriptFormatEnum
+      # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormat
+      # transcript_format:
+      #   range: TranscriptFormatEnum
+      #   required: false
+      #   ifabsent: string(PLAIN_TEXT)
+      #   examples:
+      #   - value: STRUCTURED
+      #     description: Text with speaker labels and paragraph breaks
+      has_or_had_format:
+        range: TranscriptFormat
         required: false
-        ifabsent: string(PLAIN_TEXT)
+        description: The format of the transcript (plain text, structured, timestamped, etc.)
         examples:
         - value: STRUCTURED
           description: Text with speaker labels and paragraph breaks
diff --git a/schemas/20251121/linkml/modules/classes/WebLink.yaml b/schemas/20251121/linkml/modules/classes/WebLink.yaml
index e8eae82400..9d6624bcb8 100644
--- a/schemas/20251121/linkml/modules/classes/WebLink.yaml
+++ b/schemas/20251121/linkml/modules/classes/WebLink.yaml
@@ -37,7 +37,7 @@ imports:
   - ../slots/id
   - ../slots/description
   - ../slots/url
-  - ../slots/title
+  - ../slots/has_or_had_label  # was: title - migrated per Rule 53
   - ../slots/link_text
   - ../slots/link_type
   - ../slots/link_context
@@ -94,7 +94,7 @@ classes:
       - id
       - url
       - link_text
-      - title
+      - has_or_had_label  # was: title
       - description
       - link_type
       - link_context
@@ -117,7 +117,7 @@ classes:
         range: string
         description: >-
           The visible text of the hyperlink.
-      title:
+      has_or_had_label:  # was: title
         range: string
         description: >-
           Title attribute of the link (if available).
diff --git a/schemas/20251121/linkml/modules/classes/WorkExperience.yaml b/schemas/20251121/linkml/modules/classes/WorkExperience.yaml
index 3f6d1d1534..fe03ab37fe 100644
--- a/schemas/20251121/linkml/modules/classes/WorkExperience.yaml
+++ b/schemas/20251121/linkml/modules/classes/WorkExperience.yaml
@@ -25,7 +25,9 @@ imports:
 - ../slots/job_title
 - ../slots/specificity_annotation
 - ../slots/template_specificity
-- ../slots/work_location
+# REMOVED 2026-01-14: ../slots/work_location - migrated to has_or_had_location with Location
+- ../slots/has_or_had_location
+- ./Location
 - ./SpecificityAnnotation
 - ./TemplateSpecificityScores
 default_range: string
@@ -85,7 +87,8 @@ classes:
     - job_title
     - specificity_annotation
     - template_specificity
-    - work_location
+    # REMOVED 2026-01-14: work_location - migrated to has_or_had_location with Location
+    - has_or_had_location
     slot_usage:
       job_title:
         range: string
@@ -137,12 +140,31 @@ classes:
         examples:
         - value: true
           description: Currently employed at this position
-      work_location:
-        range: string
+      # REMOVED 2026-01-14: work_location - migrated to has_or_had_location with Location
+      # work_location:
+      #   range: string
+      #   examples:
+      #   - value: Utrecht, Netherlands
+      #     description: City and country
+      #   - value: Amsterdam, Noord-Holland, Netherlands
+      #     description: City, region, country
+      has_or_had_location:
+        range: Location
+        inlined: true
+        description: |
+          Location of the work experience.
+          MIGRATED 2026-01-14: Replaces work_location slot.
         examples:
-        - value: Utrecht, Netherlands
+        - value: |
+            Location:
+              city: "Utrecht"
+              country: "Netherlands"
           description: City and country
-        - value: Amsterdam, Noord-Holland, Netherlands
+        - value: |
+            Location:
+              city: "Amsterdam"
+              region: "Noord-Holland"
+              country: "Netherlands"
           description: City, region, country
       job_description:
         range: string
diff --git a/schemas/20251121/linkml/modules/slots/surname_prefix.yaml b/schemas/20251121/linkml/modules/slots/archive/surname_prefix_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/surname_prefix.yaml
rename to schemas/20251121/linkml/modules/slots/archive/surname_prefix_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/target_name.yaml b/schemas/20251121/linkml/modules/slots/archive/target_name_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/target_name.yaml
rename to schemas/20251121/linkml/modules/slots/archive/target_name_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/taxon_name.yaml b/schemas/20251121/linkml/modules/slots/archive/taxon_name_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/taxon_name.yaml
rename to schemas/20251121/linkml/modules/slots/archive/taxon_name_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/terminal_count.yaml b/schemas/20251121/linkml/modules/slots/archive/terminal_count_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/terminal_count.yaml
rename to schemas/20251121/linkml/modules/slots/archive/terminal_count_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/text_region_count.yaml b/schemas/20251121/linkml/modules/slots/archive/text_region_count_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/text_region_count.yaml
rename to schemas/20251121/linkml/modules/slots/archive/text_region_count_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/title.yaml b/schemas/20251121/linkml/modules/slots/archive/title_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/title.yaml
rename to schemas/20251121/linkml/modules/slots/archive/title_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/title_proper.yaml b/schemas/20251121/linkml/modules/slots/archive/title_proper_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/title_proper.yaml
rename to schemas/20251121/linkml/modules/slots/archive/title_proper_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/total_chapter.yaml b/schemas/20251121/linkml/modules/slots/archive/total_chapter_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/total_chapter.yaml
rename to schemas/20251121/linkml/modules/slots/archive/total_chapter_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/total_characters_extracted.yaml b/schemas/20251121/linkml/modules/slots/archive/total_characters_extracted_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/total_characters_extracted.yaml
rename to schemas/20251121/linkml/modules/slots/archive/total_characters_extracted_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/total_connections_extracted.yaml b/schemas/20251121/linkml/modules/slots/archive/total_connections_extracted_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/total_connections_extracted.yaml
rename to schemas/20251121/linkml/modules/slots/archive/total_connections_extracted_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/track_name.yaml b/schemas/20251121/linkml/modules/slots/archive/track_name_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/track_name.yaml
rename to schemas/20251121/linkml/modules/slots/archive/track_name_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/transcript_format.yaml b/schemas/20251121/linkml/modules/slots/archive/transcript_format_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/transcript_format.yaml
rename to schemas/20251121/linkml/modules/slots/archive/transcript_format_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/traveling_venue.yaml b/schemas/20251121/linkml/modules/slots/archive/traveling_venue_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/traveling_venue.yaml
rename to schemas/20251121/linkml/modules/slots/archive/traveling_venue_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/type_label.yaml b/schemas/20251121/linkml/modules/slots/archive/type_label_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/type_label.yaml
rename to schemas/20251121/linkml/modules/slots/archive/type_label_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/type_status.yaml b/schemas/20251121/linkml/modules/slots/archive/type_status_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/type_status.yaml
rename to schemas/20251121/linkml/modules/slots/archive/type_status_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/typical_responsibility.yaml b/schemas/20251121/linkml/modules/slots/archive/typical_responsibility_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/typical_responsibility.yaml
rename to schemas/20251121/linkml/modules/slots/archive/typical_responsibility_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/unesco_domain.yaml b/schemas/20251121/linkml/modules/slots/archive/unesco_domain_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/unesco_domain.yaml
rename to schemas/20251121/linkml/modules/slots/archive/unesco_domain_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/unesco_inscription_year.yaml b/schemas/20251121/linkml/modules/slots/archive/unesco_inscription_year_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/unesco_inscription_year.yaml
rename to schemas/20251121/linkml/modules/slots/archive/unesco_inscription_year_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/unesco_list_status.yaml b/schemas/20251121/linkml/modules/slots/archive/unesco_list_status_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/unesco_list_status.yaml
rename to schemas/20251121/linkml/modules/slots/archive/unesco_list_status_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/uniform_title.yaml b/schemas/20251121/linkml/modules/slots/archive/uniform_title_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/uniform_title.yaml
rename to schemas/20251121/linkml/modules/slots/archive/uniform_title_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/unit_name.yaml b/schemas/20251121/linkml/modules/slots/archive/unit_name_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/unit_name.yaml
rename to schemas/20251121/linkml/modules/slots/archive/unit_name_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/used_by_custodian.yaml b/schemas/20251121/linkml/modules/slots/archive/used_by_custodian_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/used_by_custodian.yaml
rename to schemas/20251121/linkml/modules/slots/archive/used_by_custodian_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/uv_filtered_required.yaml b/schemas/20251121/linkml/modules/slots/archive/uv_filtered_required_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/uv_filtered_required.yaml
rename to schemas/20251121/linkml/modules/slots/archive/uv_filtered_required_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/valid_from_geo.yaml b/schemas/20251121/linkml/modules/slots/archive/valid_from_geo_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/valid_from_geo.yaml
rename to schemas/20251121/linkml/modules/slots/archive/valid_from_geo_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/valid_to_geo.yaml b/schemas/20251121/linkml/modules/slots/archive/valid_to_geo_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/valid_to_geo.yaml
rename to schemas/20251121/linkml/modules/slots/archive/valid_to_geo_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/validation_status.yaml b/schemas/20251121/linkml/modules/slots/archive/validation_status_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/validation_status.yaml
rename to schemas/20251121/linkml/modules/slots/archive/validation_status_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/variant_of_name.yaml b/schemas/20251121/linkml/modules/slots/archive/variant_of_name_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/variant_of_name.yaml
rename to schemas/20251121/linkml/modules/slots/archive/variant_of_name_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/verification_date.yaml b/schemas/20251121/linkml/modules/slots/archive/verification_date_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/verification_date.yaml
rename to schemas/20251121/linkml/modules/slots/archive/verification_date_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/viability_status.yaml b/schemas/20251121/linkml/modules/slots/archive/viability_status_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/viability_status.yaml
rename to schemas/20251121/linkml/modules/slots/archive/viability_status_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/within_auxiliary_place.yaml b/schemas/20251121/linkml/modules/slots/archive/within_auxiliary_place_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/within_auxiliary_place.yaml
rename to schemas/20251121/linkml/modules/slots/archive/within_auxiliary_place_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/within_place.yaml b/schemas/20251121/linkml/modules/slots/archive/within_place_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/within_place.yaml
rename to schemas/20251121/linkml/modules/slots/archive/within_place_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/work_location.yaml b/schemas/20251121/linkml/modules/slots/archive/work_location_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/work_location.yaml
rename to schemas/20251121/linkml/modules/slots/archive/work_location_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/workshop_space.yaml b/schemas/20251121/linkml/modules/slots/archive/workshop_space_archived_20260114.yaml
similarity index 100%
rename from schemas/20251121/linkml/modules/slots/workshop_space.yaml
rename to schemas/20251121/linkml/modules/slots/archive/workshop_space_archived_20260114.yaml
diff --git a/schemas/20251121/linkml/modules/slots/slot_fixes.yaml b/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
index fab32ad786..93100ea99d 100644
--- a/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
+++ b/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
@@ -1521,12 +1521,24 @@ fixes:
     type: slot
   - label: Quantity
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:00:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: EducationCenter - workshop_space REMOVED. Using has_or_had_quantity
+      with Quantity. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/work_location
   revision:
   - label: has_or_had_location
     type: slot
   - label: Location
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:05:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: WorkExperience - work_location REMOVED. Using has_or_had_location
+      with Location. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/word_count
   revision:
   - label: has_or_had_quantity
@@ -1545,12 +1557,24 @@ fixes:
     type: slot
   - label: Place
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:10:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: UNUSED SLOT - No class imports detected. Archived directly. Target was
+      is_or_was_located_within with Place.
 - original_slot_id: https://nde.nl/ontology/hc/slot/within_auxiliary_place
   revision:
   - label: is_or_was_located_within
     type: slot
   - label: Place
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:10:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: UNUSED SLOT - No class imports detected. Archived directly. Target was
+      is_or_was_located_within with Place.
 - original_slot_id: https://nde.nl/ontology/hc/slot/wikidata_mapping_rationale
   revision:
   - label: has_or_had_rationale
@@ -2009,6 +2033,12 @@ fixes:
     type: slot
   - label: ViabilityStatus
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:52:38Z'
+    session: session-2026-01-14-status-label-migration
+    notes: 'FULLY MIGRATED: IntangibleHeritageForm - viability_status replaced with
+      has_or_had_status using ViabilityStatus class.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/version_number
   revision:
   - label: has_or_had_version
@@ -2039,6 +2069,11 @@ fixes:
   - label: VerificationStatus
     type: class
 - original_slot_id: https://nde.nl/ontology/hc/slot/verification_date
+  processed:
+    status: true
+    date: '2026-01-14'
+    notes: 'FULLY MIGRATED: VideoTextContent.yaml - verification_date REMOVED. Using
+      temporal_extent with TimeSpan. Archived to archive/verification_date_archived_20260114.yaml.'
   revision:
   - label: temporal_extent
     type: slot
@@ -2086,7 +2121,18 @@ fixes:
     type: slot
   - label: Label
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:20:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: CustodianAppellation - variant_of_name REMOVED. Using
+      is_or_was_alternative_form_of with Label. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/validity_period
+  processed:
+    status: true
+    date: '2026-01-14'
+    notes: 'ALREADY MIGRATED: validity_period slot already uses range: TimeSpan. FundingAgenda.yaml
+      uses it correctly with TimeSpan structure. No changes needed.'
   revision:
   - label: temporal_extent
     type: slot
@@ -2098,7 +2144,18 @@ fixes:
     type: slot
   - label: ValidationStatus
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:15:00Z'
+    session: session-2026-01-14-status-migration
+    notes: 'FULLY MIGRATED: FindingAidProvenance in FindingAid.yaml - validation_status
+      replaced with has_or_had_status using ValidationStatus class.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/valid_to_geo
+  processed:
+    status: true
+    date: '2026-01-14'
+    notes: 'FULLY MIGRATED: GeoSpatialPlace.yaml + examples in ServiceArea.yaml and
+      OrganizationalChangeEvent.yaml. Archived to archive/valid_to_geo_archived_20260114.yaml.'
   revision:
   - label: temporal_extent
     type: slot
@@ -2123,6 +2180,11 @@ fixes:
   - label: Timestamp
     type: class
 - original_slot_id: https://nde.nl/ontology/hc/slot/valid_from_geo
+  processed:
+    status: true
+    date: '2026-01-14'
+    notes: 'FULLY MIGRATED: GeoSpatialPlace.yaml + examples in ServiceArea.yaml and
+      OrganizationalChangeEvent.yaml. Archived to archive/valid_from_geo_archived_20260114.yaml.'
   revision:
   - label: temporal_extent
     type: slot
@@ -2162,6 +2224,12 @@ fixes:
     type: class
     value:
     - UV Filtered lighting
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:05:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: StorageConditionPolicy - uv_filtered_required REMOVED.
+      Using is_or_was_required with RequirementStatus. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/user_community
   revision:
   - label: serves_or_served
@@ -2182,6 +2250,12 @@ fixes:
     type: slot
   - label: Custodian
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:25:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: CollectionManagementSystem - used_by_custodian REMOVED.
+      Using is_or_was_used_by with Custodian. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/used_by
   revision:
   - label: provides_or_provided_provenance_to
@@ -2278,6 +2352,12 @@ fixes:
 
       '
 - original_slot_id: https://nde.nl/ontology/hc/slot/unit_name
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:00:00Z'
+    session: session-2026-01-14-label-migration
+    notes: 'FULLY MIGRATED: unit_name replaced with has_or_had_label in OrganizationalStructure.yaml,
+      StorageUnit.yaml. Archived to archive/unit_name_archived_20260114.yaml.'
   revision:
   - label: has_or_had_label
     type: slot
@@ -2381,6 +2461,12 @@ fixes:
       (VideoObjectAnnotation class). Shares Methodology infrastructure with unique_object_count
       migration. Archived: modules/slots/archive/unique_face_count_archived_20260114.yaml'
 - original_slot_id: https://nde.nl/ontology/hc/slot/uniform_title
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:00:00Z'
+    session: session-2026-01-14-label-migration
+    notes: 'FULLY MIGRATED: uniform_title replaced with has_or_had_label in InformationCarrier.yaml.
+      Archived to archive/uniform_title_archived_20260114.yaml.'
   revision:
   - label: has_or_had_label
     type: slot
@@ -2400,7 +2486,19 @@ fixes:
     type: slot
   - label: UNESCOListStatus
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:52:38Z'
+    session: session-2026-01-14-status-label-migration
+    notes: 'FULLY MIGRATED: IntangibleHeritageForm - unesco_list_status replaced with
+      has_or_had_status using UNESCOListStatus class.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/unesco_inscription_year
+  processed:
+    status: true
+    date: '2026-01-14'
+    notes: 'FULLY MIGRATED: IntangibleHeritageForm.yaml - unesco_inscription_year
+      REMOVED. Using temporal_extent with TimeSpan.begin_of_the_begin for year. Archived
+      to archive/unesco_inscription_year_archived_20260114.yaml.'
   revision:
   - label: temporal_extent
     type: slot
@@ -2424,6 +2522,12 @@ fixes:
     type: slot
   - label: UNESCODomainTypes
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T10:05:00Z'
+    session: session-2026-01-14-migrations
+    notes: 'FULLY MIGRATED: IntangibleHeritageForm - unesco_domain REMOVED. Using
+      is_or_was_categorized_as with UNESCODomain. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/typical_technical_feature
   revision:
   - label: has_or_had_feature
@@ -2466,6 +2570,12 @@ fixes:
     type: slot
   - label: ResponsibilityTypes
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T10:10:00Z'
+    session: session-2026-01-14-migrations
+    notes: 'FULLY MIGRATED: StaffRole - typical_responsibility REMOVED. Using has_or_had_responsibility
+      with Responsibility. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/typical_response_formats
   revision:
   - label: has_or_had_format
@@ -2591,6 +2701,12 @@ fixes:
     type: slot
   - label: TypeStatus
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:10:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: BiologicalObject - type_status REMOVED. Using has_or_had_status
+      with TypeStatus. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/type_scope
   revision:
   - label: has_or_had_scope
@@ -2606,6 +2722,12 @@ fixes:
   - label: ScopeTypes
     type: class
 - original_slot_id: https://nde.nl/ontology/hc/slot/type_label
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:00:00Z'
+    session: session-2026-01-14-label-migration
+    notes: 'FULLY MIGRATED: type_label replaced with has_or_had_label in 21 Type classes
+      (ActivityType, CustodianType, etc.). Archived to archive/type_label_archived_20260114.yaml.'
   revision:
   - label: has_or_had_label
     type: slot
@@ -2671,6 +2793,12 @@ fixes:
     type: slot
   - label: VenueTypes
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T10:15:00Z'
+    session: session-2026-01-14-migrations
+    notes: 'FULLY MIGRATED: Exhibition - traveling_venue REMOVED. Using has_or_had_venue
+      with Venue. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/transition_types_detected
   revision:
   - label: has_or_had_type
@@ -2735,6 +2863,12 @@ fixes:
     type: slot
   - label: TranscriptFormat
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T10:00:00Z'
+    session: session-2026-01-14-migrations
+    notes: 'FULLY MIGRATED: VideoTranscript - transcript_format REMOVED. Using has_or_had_format
+      with TranscriptFormat. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/traditional_product
   revision:
   - label: has_or_had_type
@@ -2763,6 +2897,12 @@ fixes:
   - label: Quantity
     type: class
 - original_slot_id: https://nde.nl/ontology/hc/slot/track_name
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:00:00Z'
+    session: session-2026-01-14-label-migration
+    notes: 'FULLY MIGRATED: track_name replaced with has_or_had_label in VideoSubtitle.yaml.
+      Archived to archive/track_name_archived_20260114.yaml.'
   revision:
   - label: has_or_had_label
     type: slot
@@ -2941,6 +3081,12 @@ fixes:
     type: class
     value:
     - connection
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:50:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: NetworkAnalysis - total_connections_extracted REMOVED.
+      Using has_or_had_quantity with Quantity. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/total_characters_extracted
   revision:
   - label: has_or_had_quantity
@@ -2953,6 +3099,12 @@ fixes:
     type: class
     value:
     - character
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:55:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'ALREADY MIGRATED: VideoAnnotationTypes already has has_or_had_quantity.
+      Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/total_chapter
   revision:
   - label: has_or_had_quantity
@@ -2965,6 +3117,12 @@ fixes:
     type: class
     value:
     - chapter
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:55:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: VideoChapterList - total_chapter REMOVED. Using has_or_had_quantity
+      with Quantity. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/total_budget_amount
   revision:
   - label: has_or_had_budget
@@ -3121,6 +3279,12 @@ fixes:
     type: slot
   - label: Provenance
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:35:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'ALREADY MIGRATED: InformationCarrier - title_proper already migrated to
+      has_or_had_label with Label. Marking complete.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/title_nl
   revision:
   - label: has_or_had_label
@@ -3135,6 +3299,12 @@ fixes:
     type: slot
   - label: ISO639-3Identifier
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:15:00Z'
+    session: session-2026-01-14-label-migration
+    notes: 'FULLY MIGRATED: FindingAid.yaml SubGuideReference and RelatedGuideReference
+      classes - title_nl replaced with has_or_had_label using Label class with language_code.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/title_en
   revision:
   - label: has_or_had_label
@@ -3149,6 +3319,12 @@ fixes:
     type: slot
   - label: ISO639-3Identifier
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:15:00Z'
+    session: session-2026-01-14-label-migration
+    notes: 'FULLY MIGRATED: FindingAid.yaml SubGuideReference and RelatedGuideReference
+      classes - title_en replaced with has_or_had_label using Label class with language_code.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/title
   revision:
   - label: has_or_had_label
@@ -3163,6 +3339,13 @@ fixes:
     type: slot
   - label: TitleTypes
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:30:00Z'
+    session: session-2026-01-14-label-migration
+    notes: 'FULLY MIGRATED: title replaced with has_or_had_label in 6 classes (SocialMediaPost,
+      SocialMediaContent, FindingAid, InformationCarrier, Overview, WebLink). Original
+      slot archived to archive/title_archived_20260114.yaml.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/timestamp_value
   revision:
   - label: has_or_had_timestamp
@@ -3265,6 +3448,12 @@ fixes:
     type: class
     value:
     - text_region
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:55:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'ALREADY MIGRATED: VideoAnnotationTypes already has has_or_had_quantity.
+      Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/text_languages_detected
   revision:
   - label: has_or_had_text
@@ -3315,6 +3504,12 @@ fixes:
     type: class
     value:
     - terminal
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:00:00Z'
+    session: session-2026-01-14-quantity-migration
+    notes: 'FULLY MIGRATED: ReadingRoom - terminal_count REMOVED. Using has_or_had_quantity
+      with Quantity. Slot archived to archive/terminal_count_archived_20260114.yaml.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/temporal_coverage
   revision:
   - label: has_or_had_content
@@ -3515,6 +3710,12 @@ fixes:
     type: slot
   - label: TaxonName
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T23:52:38Z'
+    session: session-2026-01-14-status-label-migration
+    notes: 'FULLY MIGRATED: BiologicalObject - taxon_name replaced with has_or_had_label
+      using TaxonName class.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/tax_scheme
   revision:
   - label: regulated_by_scheme
@@ -3533,7 +3734,7 @@ fixes:
   revision:
   - label: allows_or_allowed
     type: slot
-  - label: Donation 
+  - label: Donation
     type: class
   - label: has_or_had_type
     type: slot
@@ -3609,6 +3810,12 @@ fixes:
     type: slot
   - label: Label
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:45:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: ConnectionSourceMetadata - target_name REMOVED. Using
+      has_or_had_label with Label. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/target_material
   revision:
   - label: stores_or_stored
@@ -3667,6 +3874,12 @@ fixes:
     type: slot
   - label: SurnamePrefix
     type: class
+  processed:
+    status: true
+    timestamp: '2026-01-14T22:35:00Z'
+    session: session-2026-01-14-quantity-location-migrations
+    notes: 'FULLY MIGRATED: PersonName - surname_prefix REMOVED. Using has_or_had_label
+      with Label. Slot archived.'
 - original_slot_id: https://nde.nl/ontology/hc/slot/supranational_code
   revision:
   - label: has_or_had_code
@@ -3688,4 +3901,4 @@ fixes:
   - label: supports_or_supported_format
     type: slot
   - label: Format
-    type: class
\ No newline at end of file
+    type: class
diff --git a/scripts/index_persons_qdrant.py b/scripts/index_persons_qdrant.py
index 3284219960..99a3d69479 100644
--- a/scripts/index_persons_qdrant.py
+++ b/scripts/index_persons_qdrant.py
@@ -626,8 +626,8 @@ def main():
     parser.add_argument(
         "--data-dir",
         type=Path,
-        default=PROJECT_ROOT / "data" / "custodian" / "person" / "entity",
-        help="Directory containing person JSON files"
+        default=PROJECT_ROOT / "data" / "person",
+        help="Directory containing person JSON files (default: data/person/ with 330K+ PPID profiles)"
     )
     parser.add_argument(
         "--host",