Hey folks,
There's only 1 remote that works with single and multi-body systems, so it could be a firmware level thing... your new remote is running the latest 2.160, and I know they've changed the nomenclature of some things as the firmware has evolved (the contents of the software revision screen, for example). The manuals all have a revision number/letter and/or a date... what's the rev of the one you're looking at? I'll see if I can find the same one. I'm not sure if you can check the firmware on your old remote (i think your display was dead?)... but if it will still power on go to Menu > Diagnostics > Software Rev and let us know what that says.
Thnaks,
Tom