update user task restrictions doc

versioned_docs/version-8.5/components/concepts/process-instance-migration.md

@@ -14,8 +14,7 @@ To repair a broken process instance without making changes to the process defini
 Use the [migration command](/apis-tools/zeebe-api/gateway-service.md#migrateprocessinstance-rpc) to change the process model of a running process instance.
 
 :::note
-You can also migrate your process instances using Operate's UI by following [the user guide](../operate/userguide/process-instance-migration.md).
-
+This change will take a couple of minutes to take effect, once it requires a restart on Tasklist.
 :::
 
 ## Changing the process instance flow for inactive parts