After relocating an extension, the following configurations are replicated from site A to site B:

• First Name

• Last Name

• Password

• Extension Number

• DID Number

• Dial by Name

• Disable Mailbox option (Extension Configuration, Mail Management tab)

• VMs

• Greetings

The following is not synched:
Greeting setting 
ONA
Mail forwarding.

The user will need to set it after relocation.

This is also noted in the MAXCS ACM/ACC 6.5 Administration Manual under the subject, "Relocating a Global Extension"