OK, this might be interesting for Korg NanoKontrol2 Users (Mackie Control mode 'Cubase') - you'll have to filter out note numbers 24-31 coming from the nano otherwise you'll go nuts, because a temporary group will be created everytime you touch a fader and all the others touched before will move with this fader.

This is because the Nano sends a 'select channel' message everytime you use a fader, which TM uses for 'create temporary fadergroup'.

I'm using the great MidiPipe from Nico Wald, there's even a new version 1.5.4 which is catalina ready. I also use it to remap some commands (Mono, Speaker B) - running all the time since around 10 years now 
It's donationware:

http://www.subtlesoft.square7.net/MidiPipe.html