Are you just upgrading the compact flash? If so, in addition to licensing, you should back up the database and then make a NEW converted file out of the backup using the Conversion utility (found under advanced utilities... if you don't know where advanced utilities are, look in your Settings on the Administration and Diagnostics program). After that you just power the system down, swap the flash and restore the converted database to the new system flash. It's a good idea to back up the voice processor to a USB flash drive too.