diff --git a/backend/src/migrations.ts b/backend/src/migrations.ts
index 0bb27c4..8405fa2 100644
--- a/backend/src/migrations.ts
+++ b/backend/src/migrations.ts
@@ -249,6 +249,46 @@ export async function migrate() {
       );
   `);
 
+  await query(`
+    UPDATE tickets t
+    SET organization_id = old_org.zammad_id
+    FROM organizations old_org
+    WHERE t.organization_id = old_org.id
+      AND t.organization_id <> old_org.zammad_id
+      AND COALESCE(t.customer_name, '') = old_org.name;
+  `);
+
+  await query(`
+    UPDATE sessions s
+    SET organization_id = old_org.zammad_id
+    FROM organizations old_org
+    WHERE s.organization_id = old_org.id
+      AND s.organization_id <> old_org.zammad_id
+      AND COALESCE(s.customer_name, '') = old_org.name;
+  `);
+
+  await query(`
+    UPDATE recurring_billings rb
+    SET organization_id = old_org.zammad_id
+    FROM organizations old_org
+    WHERE rb.organization_id = old_org.id
+      AND rb.organization_id <> old_org.zammad_id
+      AND (
+        EXISTS (
+          SELECT 1
+          FROM sessions s
+          WHERE s.recurring_billing_id = rb.id
+            AND COALESCE(s.customer_name, '') = old_org.name
+        )
+        OR EXISTS (
+          SELECT 1
+          FROM tickets t
+          WHERE t.ticket_number = COALESCE(rb.ticket_number, 'Fix#' || rb.id)
+            AND COALESCE(t.customer_name, '') = old_org.name
+        )
+      );
+  `);
+
   await query(`
     UPDATE tickets
     SET organization_id = NULL