I see, so it's your Mackie js control file.
Just a thought on your changing gain to maintain faders at zero for volume (unity). Just be very careful as the need to vary volume (in a mix situation), will be far more important varilying your faders, than varying gain. But I believe your point being you have different HUI mix mappings for different setups with your Mackie so I get it. That's a bummer that version 7.1 is causing that. I'm wondering if I will experience similar issues with outboard MIDI equipment (MIDI pachbay, Yamaha automated mixer, etc). So I'm going to hold off until the cookie crumbs are out of the bed.
Thank you for noting and I hope your issue gets fixed very soon.