I just backedup/exported my 3cx settings and deployed on new hardware. After doing so I uninstalled 3cx from the old computer. The 504 phone was still trying showing the old ip address when I logged in. I restarted/rebooted many times. Logged into 3cx (the new instance) and checked the extension 100 under provision tab and it has the mac address and phone etc listed. Even so I logged into the phone and manually changed the ip to the new server. saved restarted etc. When I came in this morning the phone was logged in as 101... I checked 3cx extensions under the provision tab and somehow the 101 extension also had that phone/mac listed for provisioning. So I cleared the info. stopped/restarted 3cx, rebooted/restarted phone and it is sill provisioning to 101. So I deleted extension 101 and the phone is still trying to log in as 101. So then I factory reset the phone, no luck, reboot phone no luck... Logged into phone admin/advance - provision tab, profile rule field http://192.168.13.144:5481/provisioning/$MA.xml save changes restart phone, the screen shows no extension etc. When I go to http:/provisioning/macaddress.xml the xml file has information for extension 101... so how is this possible... 101 was deleted.