diff --git a/appinfo/info.xml b/appinfo/info.xml
index ccc72ed9..494958f8 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -22,7 +22,7 @@ Vrij en open source onder de EUPL-1.2-licentie.
 
 **Ondersteuning:** Voor ondersteuning, neem contact op via support@conduction.nl.
     ]]></description>
-    <version>0.3.3</version>
+    <version>0.3.5</version>
     <licence>agpl</licence>
     <author mail="info@conduction.nl" homepage="https://www.conduction.nl/">Conduction</author>
     <namespace>OpenBuilt</namespace>
diff --git a/lib/Controller/ApplicationVersionsController.php b/lib/Controller/ApplicationVersionsController.php
index 6e1f75b5..30e41d10 100644
--- a/lib/Controller/ApplicationVersionsController.php
+++ b/lib/Controller/ApplicationVersionsController.php
@@ -137,13 +137,17 @@ public function index(string $slug): JSONResponse
                 _multitenancy: false
             )->getId();
 
+            // OR's searchObjects doesn't reliably filter by relation-string equality
+            // on the `application` field (the value is stored both inline AND in
+            // @self.relations, and the matcher matches neither shape consistently).
+            // Fetch every ApplicationVersion row and filter client-side by the
+            // parent Application UUID. Cheap — we expect ~3 rows per app.
             $rows = $this->objectService->searchObjects(
                 query: [
-                    '@self'       => [
+                    '@self' => [
                         'register' => $registerId,
                         'schema'   => $schemaId,
                     ],
-                    'application' => $applicationUuid,
                 ]
             );
 
@@ -152,10 +156,16 @@ public function index(string $slug): JSONResponse
                 $rowsList = $rows;
             }
 
-            $normalised = array_map(
-                fn ($row): array => $this->normaliseObject(object: $row),
-                $rowsList
-            );
+            $normalised = [];
+            foreach ($rowsList as $row) {
+                $normalisedRow = $this->normaliseObject(object: $row);
+                $rowAppUuid    = (string) ($normalisedRow['application'] ?? '');
+                if ($rowAppUuid !== $applicationUuid) {
+                    continue;
+                }
+
+                $normalised[] = $normalisedRow;
+            }
 
             return new JSONResponse(data: $normalised, statusCode: Http::STATUS_OK);
         } catch (Throwable $e) {
diff --git a/lib/Repair/MigrateToVersionedModel.php b/lib/Repair/MigrateToVersionedModel.php
index bfc2642f..ac017c65 100644
--- a/lib/Repair/MigrateToVersionedModel.php
+++ b/lib/Repair/MigrateToVersionedModel.php
@@ -147,25 +147,37 @@ public function run(IOutput $output): void
      */
     private function isAlreadyVersioned(): bool
     {
-        // Test 1 — does the versioned schema exist?
+        // The previous check was "does the versioned schema exist?" — but
+        // InitializeSettings imports the schema register BEFORE this step
+        // runs, so the `applicationVersion` schema is always present by
+        // the time we reach here. That made the short-circuit always fire
+        // and the migration always skip (issue #69).
+        //
+        // Correct check: examine the Application rows themselves. If any
+        // row carries a legacy top-level `manifest` / `version` / `status`
+        // / `currentVersion` field (the pre-spec-C shape), the install
+        // still has pre-migration data. If no Application rows exist OR
+        // all surviving rows already match the post-C shape, we're
+        // versioned.
         try {
-            $this->schemaMapper->find(self::VERSIONED_SCHEMA, _multitenancy: false);
-            return true;
+            $applications = $this->enumerateApplications();
         } catch (Throwable) {
-            // Not found — fall through to Test 2.
+            // No openbuilt register or no Application schema — fresh
+            // install. Nothing to migrate.
+            return true;
         }
 
-        // Test 2 — do any Application rows carry the legacy `currentVersion` field?
-        try {
-            $applications = $this->enumerateApplications();
-        } catch (Throwable) {
-            // If the register or schema do not exist yet, we are on a
-            // fresh install — no pre-migration data to migrate.
+        if ($applications === []) {
             return true;
         }
 
         foreach ($applications as $row) {
-            if (array_key_exists('currentVersion', $row) === true) {
+            // Pre-C shape keys we need to migrate away from.
+            if (array_key_exists('currentVersion', $row) === true
+                || array_key_exists('manifest', $row) === true
+                || array_key_exists('version', $row) === true
+                || array_key_exists('status', $row) === true
+            ) {
                 return false;
             }
         }
diff --git a/src/components/applicationDetail/ApplicationDetailHeader.vue b/src/components/applicationDetail/ApplicationDetailHeader.vue
index 9547825e..61c263c1 100644
--- a/src/components/applicationDetail/ApplicationDetailHeader.vue
+++ b/src/components/applicationDetail/ApplicationDetailHeader.vue
@@ -523,7 +523,14 @@ export default {
 			try {
 				const url = generateUrl(`/apps/openregister/api/objects/openbuilt/application/${encodeURIComponent(uuid)}`)
 				const { data } = await axios.get(url)
-				this.application = (data && (data['@self'] ? { ...data, ...(data['@self'] || {}) } : data)) || null
+				// Keep user-visible fields from `data` and stash OR's internal
+				// metadata block separately. The previous merge spread `@self`
+				// OVER `data`, which overwrote `data.description` (the real
+				// app description) with `@self.description` (an internal OR
+				// metadata field carrying e.g. node IDs). See issue #73.
+				this.application = data
+					? { ...data, '@self': data['@self'] || {} }
+					: null
 				this.loadVersions()
 			} catch (e) {
 				this.error = e instanceof Error ? e : new Error(String(e))
@@ -544,7 +551,13 @@ export default {
 				const list = Array.isArray(data)
 					? data
 					: (data && Array.isArray(data.results) ? data.results : [])
-				this.versions = list
+				// OR's object-list shape carries the UUID in `id` (mirrored
+				// from `@self.id`) but the chain/pill logic reads `uuid`.
+				// Normalise once so every consumer sees `v.uuid`.
+				this.versions = list.map((v) => ({
+					...v,
+					uuid: v.uuid || v.id || (v['@self'] && v['@self'].id) || null,
+				}))
 
 				const versionSlugFromRoute = (this.$route && this.$route.query && this.$route.query._version) || ''
 				const match = versionSlugFromRoute
diff --git a/src/store/schemas.js b/src/store/schemas.js
index 59f36ef1..841773f1 100644
--- a/src/store/schemas.js
+++ b/src/store/schemas.js
@@ -27,12 +27,21 @@ import { createObjectStore } from '@conduction/nextcloud-vue'
 
 const STORE_ID = 'openbuilt-schemas'
 
-// Runtime schema CRUD lives under /api/registers (chain #3) — not the
-// /api/objects surface that backs ordinary OR object CRUD.
-const RUNTIME_SCHEMA_BASE_URL = '/apps/openregister/api/registers'
+// We point at OR's existing schemas CRUD (`/api/schemas/{id}`) because
+// the proposed runtime per-register schema endpoint (`/api/registers/{r}/
+// schemas/{slug}`) hasn't shipped on the OR floor yet (spec C chain #3).
+//
+// `useObjectStore._buildUrl` concatenates `${baseUrl}/${register}/${schema}
+// /${id}`. We satisfy that template by splitting `/apps/openregister`,
+// `api`, and `schemas` across the baseUrl + register + schema slots, then
+// fetching by slug in the id position. The store's `register` slot is no
+// longer carrying the OR register name; we keep the per-version register
+// info on the type config under `slugs.registerSlug` for callers that
+// need to filter the collection.
+const SCHEMA_API_BASE_URL = '/apps/openregister'
 
 const useSchemasStoreRaw = createObjectStore(STORE_ID, {
-	baseUrl: RUNTIME_SCHEMA_BASE_URL,
+	baseUrl: SCHEMA_API_BASE_URL,
 })
 
 /**
@@ -77,14 +86,16 @@ export function useSchemasStore(appSlug, versionSlug) {
 	const register = registerSlugForApp(appSlug, versionSlug)
 	const type = 'schema'
 
-	// Register the object type once per (store, type, register) tuple. The base
-	// store records the register/schema pair under the type slug; here
-	// we use literal `schema` for both because chain #3's endpoint shape
-	// expects `/registers/{register}/schemas[/{slug}]`.
-	// Re-register when register changes (different version selected).
+	// Slot the URL segments so `_buildUrl` produces
+	//   `/apps/openregister/api/schemas[/{slug}]`
+	// (OR's existing schemas CRUD).
+	// We keep the per-version OR register name on `slugs.registerSlug`
+	// so the consumer can filter the global schema collection client-side
+	// to only the schemas owned by the selected version's register.
 	if (!store.objectTypeRegistry[type]
-		|| store.objectTypeRegistry[type].register !== register) {
-		store.registerObjectType(type, 'schemas', register)
+		|| !store.objectTypeRegistry[type].slugs
+		|| store.objectTypeRegistry[type].slugs.registerSlug !== register) {
+		store.registerObjectType(type, 'schemas', 'api', { registerSlug: register })
 	}
 	return store
 }
diff --git a/src/views/SchemaDesigner.vue b/src/views/SchemaDesigner.vue
index f727b6df..58654533 100644
--- a/src/views/SchemaDesigner.vue
+++ b/src/views/SchemaDesigner.vue
@@ -329,7 +329,19 @@ export default {
 			this.loadingList = true
 			try {
 				const results = await this.store.fetchCollection(SCHEMA_TYPE)
-				this.schemas = Array.isArray(results) ? results : []
+				const all = Array.isArray(results) ? results : []
+				// OR's schemas endpoint returns every schema in the
+				// organisation. Filter to the namespaced subset that
+				// belongs to this app+version register so the designer
+				// only shows the user's relevant schemas. Per the wizard
+				// (issue #71) seed slugs are `{appSlug}-{versionSlug}-X`.
+				const prefix = this.versionSlug
+					? `${this.appSlug}-${this.versionSlug}-`
+					: `${this.appSlug}-`
+				this.schemas = all.filter((s) => {
+					const slug = s.slug || (s['@self'] && s['@self'].slug) || ''
+					return typeof slug === 'string' && slug.startsWith(prefix)
+				})
 				const err = this.store.errors[SCHEMA_TYPE]
 				if (err) {
 					showError(this.t('openbuilt', 'Failed to load schemas: {error}', { error: err }))