Ok, so I'm still somewhat guessing how CMD works, but if I select "Learn" and input a couple of notes, the arp and CMD seem to work as expected.
However, if I close ANA2 GUI and reopen it, the CMD seems to forgot what I inputed (reverts back to default).
I know I haven't saved my newly created CMD preset (not sure if I can), but I wouldn't expect a GUI open/close to upset the CMD. Check the video.
Mac 3.6 i7 Bitwig 2.2 Sierra