When you say other activity button, I assume "dvd, sat" etc. is where you want to copy the "on" macro?

I've done only one 880 and that was replacing a 900, so I just imported the 900 file and added images to the watch/learn pages and I was done.

Assuming I'm correct, I just tried to recreate your scenario and I couldn't.
I made an "on" macro, then in the macro window I right clicked and copied.

I then went to the DVD button on the watch page went to the macro window, right clicked, hit paste and the macro showed up and I still had my DVD icon.

CCP has been pretty rock solid for me. Had to figure how to get CCP to recognize a 900 file when trying to upload to an 880. But that took maybe 15min.