Does anyone know if its possible to control/output midi from the external midi track (aux track 3) with midi input from another controller plugged into the OPXY? The manual instructs using the musical keyboard on the OP XY to send external midi but when I try to do the same with a midi keyboard, the notes don’t send. I know the midi keyboard is working because I can use it to play notes on the instrument tracks. Anyone have experience with this?