Move a number and extension from one handset to another.

Hi and thank you for reaching out sbassett_wlr! Welcome to the forums! I can help with getting all that information moved. If you click on my handle (Comcast_Gina) and send me a private message with your name, the business name, the complete service address (including city, state, ZIP, suite number, etc), and the phone or account number as well as the respective extensions, I'd be glad to assist. 

How was this physical phone move done? I moved on employee to a new office and wanted to move her old phone to the new office. I simply unplugged it at old location and plugged it in at new office. It booted up and appears to be her correct phone extension.  Did I do this correctly?  On the Norstar phone system I had to go into programming to tell phone system I was moving a phone and extension to a new location/office.