HI maag, yes that's right, but mobinvup service only sync changes from aod. Changes only occur if a mdm device send a new hardware sync and here is the problem. If the device is offline or has no internet access it could take a very long time to get this device to ldms. At the meantime the device looks like unmanaged in ldms and we can not different between active sync and mdm devices.
Do you know a way to force a full db sync from aod after syncing from exchange?