I've added a new subscriber ot my CUCM 6.1 cluster and want devices to start using it. I've changed a device pool to use a new CallManager group with the new server as 1st choice. All the IP phones in this device pool have reset and now register with the new server. The ATAs still register with the old subscriber. They don't seem to have refreshed their config. I've reset from CallManager admin and powered them off and on. Any suggestions?