diff --git a/server/src/plugins/crdt/api/fetch.ts b/server/src/plugins/crdt/api/fetch.ts
index ed3e3c3d5..1f680f198 100644
--- a/server/src/plugins/crdt/api/fetch.ts
+++ b/server/src/plugins/crdt/api/fetch.ts
@@ -1,6 +1,6 @@
 import { isConnectionContext } from '@app/plugins/crdt/context';
 import { getLogger } from '@app/logger';
-import { getDocument } from '@app/plugins/crdt/get-document';
+import { getDocument } from '@app/plugins/crdt/api/get-document';
 
 const log = getLogger('collaboration');
 
diff --git a/server/src/plugins/crdt/get-document.ts b/server/src/plugins/crdt/api/get-document.ts
similarity index 100%
rename from server/src/plugins/crdt/get-document.ts
rename to server/src/plugins/crdt/api/get-document.ts
diff --git a/server/src/plugins/crdt/collaboration-server.ts b/server/src/plugins/crdt/collaboration-server.ts
index 58dad1a7d..e36614493 100644
--- a/server/src/plugins/crdt/collaboration-server.ts
+++ b/server/src/plugins/crdt/collaboration-server.ts
@@ -4,9 +4,11 @@ import { isConnectionContext } from '@app/plugins/crdt/context';
 import { isDeployed } from '@app/config/env';
 import { getRedisExtension } from '@app/plugins/crdt/redis';
 import { isNotNull } from '@app/functions/guards';
-import { getApiExtension } from '@app/plugins/crdt/api/extension';
-import { getDocument } from '@app/plugins/crdt/get-document';
-import { applyUpdate, encodeStateAsUpdate } from 'yjs';
+import { getDocument } from '@app/plugins/crdt/api/get-document';
+import { XmlText, applyUpdateV2, encodeSnapshotV2, encodeStateAsUpdateV2, snapshot } from 'yjs';
+import { KABAL_API_URL } from '@app/plugins/crdt/api/url';
+import { getHeaders } from '@app/plugins/crdt/api/headers';
+import { yTextToSlateElement } from '@slate-yjs/core';
 
 const log = getLogger('collaboration');
 
@@ -55,14 +57,48 @@ export const collaborationServer = Server.configure({
 
     log.info({ msg: 'Loaded document', data: { behandlingId, dokumentId } });
 
-    const state = Buffer.from(res.data, 'base64');
+    const state = new Uint8Array(Buffer.from(res.data, 'base64'));
 
-    applyUpdate(document, encodeStateAsUpdate(document, state));
+    applyUpdateV2(document, encodeStateAsUpdateV2(document, state));
 
     log.info({ msg: 'Loaded document applied', data: { behandlingId, dokumentId } });
+  },
+
+  onStoreDocument: async ({ context, document }) => {
+    if (!isConnectionContext(context)) {
+      log.error({ msg: 'Tried to store document without context' });
+      throw new Error('Invalid context');
+    }
+
+    const { behandlingId, dokumentId, req } = context;
+
+    const state = encodeSnapshotV2(snapshot(document));
+
+    // const state = Buffer.from(encodeStateAsUpdateV2(document));
+    const data = Buffer.from(state).toString('base64');
+
+    const sharedRoot = document.get('content', XmlText);
+    const nodes = yTextToSlateElement(sharedRoot);
+
+    const res = await fetch(`${KABAL_API_URL}/behandlinger/${behandlingId}/smartdokumenter/${dokumentId}`, {
+      method: 'PATCH',
+      headers: { ...getHeaders(req), 'Content-Type': 'application/json' },
+      body: JSON.stringify({ content: nodes.children, data }),
+    });
+
+    if (!res.ok) {
+      const msg = `Failed to save document. API responded with status code ${res.status}.`;
+      const text = await res.text();
+      log.error({ msg, data: { behandlingId, dokumentId, statusCode: res.status, response: text } });
+
+      throw new Error(`${msg} - ${text}`);
+    }
 
-    return document;
+    log.info({
+      msg: 'Saved document to database',
+      data: { behandlingId, dokumentId, content: JSON.stringify(nodes, null, 2) },
+    });
   },
 
-  extensions: isDeployed ? [getRedisExtension(), getApiExtension()].filter(isNotNull) : [getApiExtension()],
+  extensions: isDeployed ? [getRedisExtension()].filter(isNotNull) : [],
 });