DADM's are not hooked up to a PDKU port like a DSS, they are just a add-on to the phone.
Are you are moving the phone via port swap, prg 01/02?
I am not sure that will work with the DADM. It does not work on the 670.
You should just move the phone by swinging the jumper.
If you have to move it in software, remove the add-on, then swap ports, then re-program the add-on.