Okay, I've searched the forum and manual and this is driving me bonkers so I thought I'd ask for help.
Maybe it's not possible but I was under the impression you could control layer A and B separately from a DAW. Inside Ableton Live I've got two different midi channels (Outputting to midi channel 1 and midi channel 2). However, both of them trigger Layer A. I can play Layer B on the REV 2 keyboard and Ableton is telling me it's transmitting via midi channel 2, but when I run the midi back out of Ableton into the REV it only triggers layer A. I can't trigger Layer B from the DAW at all. Am I doing something wrong or is it not possible?