I can't answer the question, but did find a way to solve my problem. I used a dummy control clip in a dummy midi track to send data to a MIDI loopback using channel 16 on the IAC bus on mac to set the value. I kind of needed this for a program change, so now whenever I need a new song I just trigger the clip, and it sets all the knobs I want to map to that CC, no matter where they are in ableton. This is huge.
Tip: I used MidiSimulator to send the midi message while in MIDI-map mode so I didn't have to futz with triggering the sample. Super easy!https://www.macupdate.com/app/mac/35645/midisimulator