In addition to the above post, all the station ports after slot two will be shifted up by 24. So you want to review the station layout of your system using the dial plan or station assignments. It might be a good idea to print the stuff so you can see it all at once. Then you can mark up the print, and know what stations need to be reprogrammed. Depending on what is in the rest of the switch, you may have a lot of programming to do!
....JIM....