Hello Peter,
I read through this post and it seems like something similar I currently trying to figure out.
I am using ST3 with AUM on an iPad. I have 2 separate controllers I use to control ST3 via camera kit (pedals and surface controlers). ST3 sees and accepts all midi from the controllers and then sends midi from within the tracks just fine. My issue is it is broadcasting omni and the patch changes it sends are only intended for one device. Other devices are receiving the patch changes and changing patches when they shouldn't. I tried to use the AMU midi routing to limit what devices receive ST3 midi signals, but after experimenting determined ST3 is sending midi at the os level and AUM cannot limit that. I am wondering if there is a way to only send midi out to AUM and not the os?
Thanks for creating and supporting a great product!
I have a work around to limit the midi in, out is my main issue.
(If you feel I should start a new post just let me know)
JS