diff --git a/.github/workflows/composer.yaml b/.github/workflows/composer.yaml
index b6ae0026..9468935d 100644
--- a/.github/workflows/composer.yaml
+++ b/.github/workflows/composer.yaml
@@ -77,4 +77,4 @@ jobs:
           docker network create frontend
 
       - run: |
-          docker compose run --rm phpfpm composer audit
+          docker compose run --rm phpfpm composer audit --locked
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 00000000..9e55d961
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,2 @@
+# Ignore all Drupal config since it is nearly all autogenerated by config-export
+config/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7d690d9..bd07bbc9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,14 @@ Nedenfor ses dato for release og beskrivelse af opgaver som er implementeret.
 
 ## [Under udvikling]
 
+* [PR-514](https://github.com/itk-dev/selvbetjening.aarhuskommune.dk/pull/514)
+  * Opdaterede til OS2Forms Core 5.1.0.
+    * Opdaterede `Full HTML`- og `Simpel HTML`-tekstformater til at benytte
+      CKEditor 5.
+    * Skiftede fra DAWA (udfaset) til adressevælgeren ifb. adresseopslag.
+    * Skiftede fra DAWA (udfaset) til datafordeleren ifb. matrikelopslag.
+  * Opdaterede til den moderniserede datafordeler ifb. CVR opslag og P-nummer
+    opslag.
 * [PR-513](https://github.com/itk-dev/selvbetjening.aarhuskommune.dk/pull/513)
   Tilføjede endnu en fiks køjobkommando – redigering!
 * [PR-512](https://github.com/itk-dev/selvbetjening.aarhuskommune.dk/pull/512)
diff --git a/composer.json b/composer.json
index 1c01b162..24296124 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         "itk-dev/os2forms_nemlogin_openid_connect": "^2.2",
         "itk-dev/os2forms_user_field_lookup": "^1.1",
         "itk-dev/web_accessibility_statement": "^1.1",
-        "os2forms/os2forms": "dev-release/5.1.4 as 5.1.4",
+        "os2forms/os2forms": "dev-release/5.1.5 as 5.1.5",
         "os2forms/os2forms_forloeb_profile": "^1.15",
         "os2forms/os2forms_get_organized": "^2.0",
         "os2forms/os2forms_organisation": "^2.1",
diff --git a/composer.lock b/composer.lock
index 63931d01..18b736c6 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "5db9ae6f59099928fe37b846f0f618dd",
+    "content-hash": "d002d86635fe07292980e3a6c02071d4",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -9165,16 +9165,16 @@
         },
         {
             "name": "os2forms/os2forms",
-            "version": "dev-release/5.1.4",
+            "version": "dev-release/5.1.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/itk-dev/os2forms.git",
-                "reference": "c096da53921df25ebf8841338da4b672940fbf5c"
+                "reference": "9680ac4491346e86a17d08dd74c8abde31e2ec72"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/itk-dev/os2forms/zipball/c096da53921df25ebf8841338da4b672940fbf5c",
-                "reference": "c096da53921df25ebf8841338da4b672940fbf5c",
+                "url": "https://api.github.com/repos/itk-dev/os2forms/zipball/9680ac4491346e86a17d08dd74c8abde31e2ec72",
+                "reference": "9680ac4491346e86a17d08dd74c8abde31e2ec72",
                 "shasum": ""
             },
             "require": {
@@ -9310,9 +9310,9 @@
             ],
             "description": "Drupal 10 OS2Form module provides advanced webform functionality for Danish Municipalities",
             "support": {
-                "source": "https://github.com/itk-dev/os2forms/tree/feature/maps-element-display"
+                "source": "https://github.com/itk-dev/os2forms/tree/release/5.1.5"
             },
-            "time": "2026-04-13T12:02:30+00:00"
+            "time": "2026-06-09T12:43:37+00:00"
         },
         {
             "name": "os2forms/os2forms_forloeb_profile",
@@ -9683,16 +9683,16 @@
         },
         {
             "name": "os2web/os2web_datalookup",
-            "version": "3.0.3",
+            "version": "3.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/OS2web/os2web_datalookup.git",
-                "reference": "3101b541829506a28ec9b827f04088b59f8a8a9f"
+                "reference": "361d030fdcfff64b8fc90f2673f5ef0619df32d1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/OS2web/os2web_datalookup/zipball/3101b541829506a28ec9b827f04088b59f8a8a9f",
-                "reference": "3101b541829506a28ec9b827f04088b59f8a8a9f",
+                "url": "https://api.github.com/repos/OS2web/os2web_datalookup/zipball/361d030fdcfff64b8fc90f2673f5ef0619df32d1",
+                "reference": "361d030fdcfff64b8fc90f2673f5ef0619df32d1",
                 "shasum": ""
             },
             "require": {
@@ -9714,9 +9714,9 @@
             "description": "Provides integration with Danish data lookup services such as Service platformen or Datafordeler.",
             "support": {
                 "issues": "https://github.com/OS2web/os2web_datalookup/issues",
-                "source": "https://github.com/OS2web/os2web_datalookup/tree/3.0.3"
+                "source": "https://github.com/OS2web/os2web_datalookup/tree/3.3.0"
             },
-            "time": "2025-11-19T09:33:00+00:00"
+            "time": "2026-06-08T06:56:10+00:00"
         },
         {
             "name": "os2web/os2web_key",
@@ -23582,9 +23582,9 @@
     "aliases": [
         {
             "package": "os2forms/os2forms",
-            "version": "dev-release/5.1.4",
-            "alias": "5.1.4",
-            "alias_normalized": "5.1.4.0"
+            "version": "dev-release/5.1.5",
+            "alias": "5.1.5",
+            "alias_normalized": "5.1.5.0"
         }
     ],
     "minimum-stability": "dev",
diff --git a/config/sync/advancedqueue.advancedqueue_queue.fasit_queue.yml b/config/sync/advancedqueue.advancedqueue_queue.fasit_queue.yml
index 604434ea..7f05f88b 100644
--- a/config/sync/advancedqueue.advancedqueue_queue.fasit_queue.yml
+++ b/config/sync/advancedqueue.advancedqueue_queue.fasit_queue.yml
@@ -10,6 +10,7 @@ backend_configuration:
 processor: daemon
 processing_time: 280
 locked: false
+stop_when_empty: true
 threshold:
   type: 0
   limit: 0
diff --git a/config/sync/advancedqueue.advancedqueue_queue.get_organized_queue.yml b/config/sync/advancedqueue.advancedqueue_queue.get_organized_queue.yml
index 13ed29aa..f830694b 100644
--- a/config/sync/advancedqueue.advancedqueue_queue.get_organized_queue.yml
+++ b/config/sync/advancedqueue.advancedqueue_queue.get_organized_queue.yml
@@ -10,6 +10,7 @@ backend_configuration:
 processor: daemon
 processing_time: 280
 locked: false
+stop_when_empty: true
 threshold:
   type: 0
   limit: 0
diff --git a/config/sync/advancedqueue.advancedqueue_queue.os2forms_api_request_handler.yml b/config/sync/advancedqueue.advancedqueue_queue.os2forms_api_request_handler.yml
index 02a30844..0936cd7f 100644
--- a/config/sync/advancedqueue.advancedqueue_queue.os2forms_api_request_handler.yml
+++ b/config/sync/advancedqueue.advancedqueue_queue.os2forms_api_request_handler.yml
@@ -10,6 +10,7 @@ backend_configuration:
 processor: daemon
 processing_time: 280
 locked: false
+stop_when_empty: true
 threshold:
   type: 0
   limit: 0
diff --git a/config/sync/advancedqueue.advancedqueue_queue.os2forms_digital_post.yml b/config/sync/advancedqueue.advancedqueue_queue.os2forms_digital_post.yml
index a6421de8..23f19c2d 100644
--- a/config/sync/advancedqueue.advancedqueue_queue.os2forms_digital_post.yml
+++ b/config/sync/advancedqueue.advancedqueue_queue.os2forms_digital_post.yml
@@ -15,6 +15,7 @@ backend_configuration:
 processor: daemon
 processing_time: 280
 locked: false
+stop_when_empty: true
 threshold:
   type: 0
   limit: 0
diff --git a/config/sync/advancedqueue.advancedqueue_queue.os2forms_forloeb_notification.yml b/config/sync/advancedqueue.advancedqueue_queue.os2forms_forloeb_notification.yml
index 73847a02..04e79e1b 100644
--- a/config/sync/advancedqueue.advancedqueue_queue.os2forms_forloeb_notification.yml
+++ b/config/sync/advancedqueue.advancedqueue_queue.os2forms_forloeb_notification.yml
@@ -12,6 +12,7 @@ backend_configuration:
 processor: daemon
 processing_time: 90
 locked: false
+stop_when_empty: true
 threshold:
   type: 0
   limit: 0
diff --git a/config/sync/advancedqueue.advancedqueue_queue.os2web_audit.yml b/config/sync/advancedqueue.advancedqueue_queue.os2web_audit.yml
index a4ca417c..d0c41476 100644
--- a/config/sync/advancedqueue.advancedqueue_queue.os2web_audit.yml
+++ b/config/sync/advancedqueue.advancedqueue_queue.os2web_audit.yml
@@ -1,4 +1,4 @@
-uuid: null
+uuid: b0f9375f-7d63-4260-a80a-389cdf703416
 langcode: da
 status: true
 dependencies: {}
diff --git a/config/sync/advancedqueue.advancedqueue_queue.send_digital_post.yml b/config/sync/advancedqueue.advancedqueue_queue.send_digital_post.yml
index aa9e8953..6e1ac826 100644
--- a/config/sync/advancedqueue.advancedqueue_queue.send_digital_post.yml
+++ b/config/sync/advancedqueue.advancedqueue_queue.send_digital_post.yml
@@ -10,6 +10,7 @@ backend_configuration:
 processor: daemon
 processing_time: 280
 locked: false
+stop_when_empty: true
 threshold:
   type: 0
   limit: 0
diff --git a/config/sync/core.extension.yml b/config/sync/core.extension.yml
index 41cefe02..93f76f18 100644
--- a/config/sync/core.extension.yml
+++ b/config/sync/core.extension.yml
@@ -14,7 +14,6 @@ module:
   breakpoint: 0
   chosen: 0
   chosen_lib: 0
-  ckeditor: 0
   ckeditor5: 0
   clamav: 0
   coc_forms_auto_export: 0
diff --git a/config/sync/editor.editor.basic_html.yml b/config/sync/editor.editor.basic_html.yml
index 9cf54736..b18fd740 100644
--- a/config/sync/editor.editor.basic_html.yml
+++ b/config/sync/editor.editor.basic_html.yml
@@ -5,37 +5,63 @@ dependencies:
   config:
     - filter.format.basic_html
   module:
-    - ckeditor
+    - ckeditor5
 _core:
   default_config_hash: a5AV-gXquwTaJSpYtmWEQiGfr7JWvtqAX7thbPr8qEk
 format: basic_html
-editor: ckeditor
+editor: ckeditor5
 settings:
   toolbar:
-    rows:
-      - - name: Formatting
-          items:
-            - Bold
-            - Italic
-        - name: Linking
-          items:
-            - DrupalLink
-            - DrupalUnlink
-        - name: Lists
-          items:
-            - BulletedList
-            - NumberedList
-        - name: Media
-          items:
-            - Blockquote
-            - DrupalImage
-        - name: "Block Formatting"
-          items:
-            - Format
-        - name: Tools
-          items:
-            - Source
-  plugins: {}
+    items:
+      - bold
+      - italic
+      - "|"
+      - link
+      - "|"
+      - bulletedList
+      - numberedList
+      - "|"
+      - blockQuote
+      - drupalInsertImage
+      - "|"
+      - heading
+      - "|"
+      - sourceEditing
+      - "|"
+      - code
+  plugins:
+    ckeditor5_heading:
+      enabled_headings:
+        - heading2
+        - heading3
+        - heading4
+        - heading5
+        - heading6
+    ckeditor5_imageResize:
+      allow_resize: true
+    ckeditor5_list:
+      properties:
+        reversed: false
+        startIndex: true
+      multiBlock: true
+    ckeditor5_sourceEditing:
+      allowed_tags:
+        - "<cite>"
+        - "<dl>"
+        - "<dt>"
+        - "<dd>"
+        - "<span>"
+        - "<a hreflang>"
+        - "<blockquote cite>"
+        - "<ul type>"
+        - "<ol type>"
+        - "<h2 id>"
+        - "<h3 id>"
+        - "<h4 id>"
+        - "<h5 id>"
+        - "<h6 id>"
+    editor_advanced_link_link:
+      enabled_attributes: {}
 image_upload:
   status: true
   scheme: public
diff --git a/config/sync/editor.editor.full_html.yml b/config/sync/editor.editor.full_html.yml
index 34afec36..035c3132 100644
--- a/config/sync/editor.editor.full_html.yml
+++ b/config/sync/editor.editor.full_html.yml
@@ -5,33 +5,61 @@ dependencies:
   config:
     - filter.format.full_html
   module:
-    - ckeditor
+    - ckeditor5
 _core:
   default_config_hash: nKa3JTCziVQ5qit0NmNBNDUQboacUWjDvf9KnHdoebg
 format: full_html
-editor: ckeditor
+editor: ckeditor5
 settings:
   toolbar:
-    rows:
-      - - name: Formatering
-          items:
-            - Bold
-            - Italic
-        - name: Links
-          items:
-            - DrupalLink
-            - DrupalUnlink
-        - name: Lister
-          items:
-            - BulletedList
-            - NumberedList
-        - name: Media
-          items:
-            - Blockquote
-            - DrupalImage
-        - name: Værktøjer
-          items:
-            - Source
-  plugins: {}
+    items:
+      - bold
+      - italic
+      - "|"
+      - link
+      - "|"
+      - bulletedList
+      - numberedList
+      - "|"
+      - blockQuote
+      - drupalInsertImage
+      - "|"
+      - sourceEditing
+      - "|"
+      - code
+      - heading
+  plugins:
+    ckeditor5_heading:
+      enabled_headings:
+        - heading2
+        - heading3
+        - heading4
+        - heading5
+        - heading6
+    ckeditor5_imageResize:
+      allow_resize: true
+    ckeditor5_list:
+      properties:
+        reversed: false
+        startIndex: true
+      multiBlock: true
+    ckeditor5_sourceEditing:
+      allowed_tags:
+        - "<cite>"
+        - "<dl>"
+        - "<dt>"
+        - "<dd>"
+        - "<h2 id>"
+        - "<h3 id>"
+        - "<h4 id>"
+        - "<h5 id>"
+        - "<h6 id>"
+        - "<a hreflang>"
+        - "<blockquote cite>"
+        - "<ul type>"
+        - "<ol type>"
+        - "<img data-entity-type data-entity-uuid>"
+    editor_advanced_link_link:
+      enabled_attributes: {}
 image_upload:
   status: false
diff --git a/config/sync/entity_print.print_engine.dompdf.yml b/config/sync/entity_print.print_engine.dompdf.yml
index 3d0a6864..fe8d5bec 100644
--- a/config/sync/entity_print.print_engine.dompdf.yml
+++ b/config/sync/entity_print.print_engine.dompdf.yml
@@ -15,5 +15,5 @@ settings:
   cafile: ""
   verify_peer: true
   verify_peer_name: true
+  disable_log: false
   orientation: portrait
-  disable_log: 0
diff --git a/config/sync/field.field.node.webform.body.yml b/config/sync/field.field.node.webform.body.yml
index 42345788..bd63e19b 100644
--- a/config/sync/field.field.node.webform.body.yml
+++ b/config/sync/field.field.node.webform.body.yml
@@ -22,4 +22,5 @@ default_value_callback: ""
 settings:
   display_summary: true
   required_summary: false
+  allowed_formats: {}
 field_type: text_with_summary
diff --git a/config/sync/language/en/eu_cookie_compliance.settings.yml b/config/sync/language/en/eu_cookie_compliance.settings.yml
index 8bbb5fbd..4a8a3308 100644
--- a/config/sync/language/en/eu_cookie_compliance.settings.yml
+++ b/config/sync/language/en/eu_cookie_compliance.settings.yml
@@ -1,18 +1,18 @@
-popup_agreed:
-  value: "<h2>Thank you for accepting cookies</h2><p>You can now hide this message or find out more about cookies.</p>"
-popup_agree_button_message: Accept
-popup_more_info_button_message: "More info"
-popup_find_more_button_message: "More info"
-popup_hide_button_message: Hide
 popup_info:
   value: "<h2>We use cookies on this site to enhance your user experience</h2><p>By clicking the Accept button, you agree to us doing so.</p>"
 mobile_popup_info:
   value: "<h2>We use cookies on this site to enhance your user experience</h2><p>By tapping the Accept button, you agree to us doing so.</p>"
-popup_link: "<front>"
+popup_agree_button_message: Accept
+popup_more_info_button_message: "More info"
 disagree_button_label: "No, thanks"
+popup_agreed:
+  value: "<h2>Thank you for accepting cookies</h2><p>You can now hide this message or find out more about cookies.</p>"
+popup_find_more_button_message: "More info"
+popup_hide_button_message: Hide
+popup_link: "<front>"
 withdraw_message:
   value: "<h2>We use cookies on this site to enhance your user experience</h2><p>You have given your consent for us to set cookies.</p>"
-withdraw_action_button_label: "Withdraw consent"
 withdraw_tab_button_label: "Privacy settings"
+withdraw_action_button_label: "Withdraw consent"
 save_preferences_button_label: "Save preferences"
 accept_all_categories_button_label: "Accept all cookies"
diff --git a/config/sync/views.view.maestro_all_flows.yml b/config/sync/views.view.maestro_all_flows.yml
index f5bdbbcb..8e4a51f2 100644
--- a/config/sync/views.view.maestro_all_flows.yml
+++ b/config/sync/views.view.maestro_all_flows.yml
@@ -269,7 +269,7 @@ display:
           hide_empty: false
           empty_zero: false
           hide_alter_empty: true
-          show_as_link: 1
+          show_as_link: true
         created:
           id: created
           table: maestro_process
@@ -644,7 +644,7 @@ display:
               administrator: "0"
               maestro_example: "0"
               internal: "0"
-            reduce: 0
+            reduce: false
           is_grouped: false
           group_info:
             label: ""
diff --git a/config/sync/views.view.maestro_all_in_production_tasks.yml b/config/sync/views.view.maestro_all_in_production_tasks.yml
index 6563ff30..e2f78001 100644
--- a/config/sync/views.view.maestro_all_in_production_tasks.yml
+++ b/config/sync/views.view.maestro_all_in_production_tasks.yml
@@ -2659,7 +2659,7 @@ display:
           hide_empty: false
           empty_zero: false
           hide_alter_empty: true
-          show_how_assigned: 0
+          show_how_assigned: false
           separator_text: "<br>"
         process_name:
           id: process_name
diff --git a/config/sync/views.view.maestro_completed_tasks.yml b/config/sync/views.view.maestro_completed_tasks.yml
index e0a7d525..a64d41ff 100644
--- a/config/sync/views.view.maestro_completed_tasks.yml
+++ b/config/sync/views.view.maestro_completed_tasks.yml
@@ -266,7 +266,7 @@ display:
           empty_zero: false
           hide_alter_empty: true
           user_display_style: name
-          link_to_user: 1
+          link_to_user: true
       pager:
         type: mini
         options:
diff --git a/config/sync/views.view.maestro_entity_identifiers.yml b/config/sync/views.view.maestro_entity_identifiers.yml
index ad24d1b5..26b958a2 100644
--- a/config/sync/views.view.maestro_entity_identifiers.yml
+++ b/config/sync/views.view.maestro_entity_identifiers.yml
@@ -72,7 +72,7 @@ display:
           hide_empty: false
           empty_zero: false
           hide_alter_empty: true
-          link_to_entity: 1
+          link_to_entity: true
         entity_edit_link:
           id: entity_edit_link
           table: maestro_entity_identifiers