I notice that AnalogLab doesn't "see" the KeyStep Pro as itself. Just as a "default MIDI controller." Seems a bit odd.
HECK!!
Would it even be possible to have AnalogLab "see" and take in all four MIDI channels from the KeyStep Pro? .. or other sources even I suppose. Take in all 16 MIDI channels at once, then route that to the appropriate instrument from within AnalogLab.
Just a thought. It'd be pretty sweet live performance wise. Not so great studio wise, without also including individual stereo outputs.