I am not sure what the ID change has to do with resolving what you have explained. There is no difference between a trial version and a full version except for the time alloted for using it. A trial version is a full version waiting for a serial number to make it so. So if you have a serial number you should be able to enter it and activate the trial version to full use.
If transferring the license is still somehow a necessity... Transfer an Adobe product license
