An MSC-VLR of a wireless telecommunications network also having an HLR and at least a second MSC-VLR and a plurality of mobiles. The MSC-VLR includes a network interface unit which communicates with the network. The MSC-VLR includes a processing unit that is in communication with the network interface unit and which produces a message that is sent to the HLR through the network from the network interface unit which causes the HLR to re-register at least two mobiles which are registered in the HLR for the second MSC-VLR to the MSC-VLR. An HLR of a wireless telecommunications network also having an MSC-VLR and at least a second MSC-VLR and a plurality of mobiles. A method of re-registering mobiles to an MSC-VLR of a wireless telecommunications network also having an HLR from a second MSC-VLR and a plurality of mobiles.