CloudNote (php) now required the ModifiedTime to be send with the required change we want to make. This allows it to check if nothing changed in the meantime and reject a change if someone else made a change on the server. We mainly added this now into the desktop app. We also improved the message shown when changes are detected on the server (when polling) to show the actual titles of the changed/deleted items. It also does not force the user anymore to close the application but informs him that the changed items on the server will reject if we try to modify them.