I am working on moving one of my subscribers (7.1.3) to a remote office but I have a question before I proceed to change the IP address. Talking to a cisco partner, they recommended to create a new Vlan (e.g 192.168.30.0/24) onsite and make the IP change right there assigning a 192.168.30.X IP to the server. Once I was done, shut down the Vlan and move the server to the remote location. Turn on the Vlan (192.168.30.0/24) at the new location and adjust it accordingly. Everything should be able to work with no problems. Let me mention that Phones and GWs will be in a different Vlan
They stated that if I needed to move the server to another location in the future I just had to turn off the vlan, move the server and turn it back on in the new building and everything should be good to go.
I would like to hear some suggestion because based on Cisco documentation, you should have your CCM, Phones and GWs in the same Vlan preferably.