One Step Forward Two Steps Back

So here's where we stand.
Ive been playing with the MIDI file on the RM1x today and I've learnt a lot about its MIDI editing capabilities. It's all good. But, at some point in the proceedings I've messed with MIDI velocities on the QY100 and there's a huge drop in volume in the main track section. What I need to do is write the track from scratch in the QY100 and make a new MIDI file for the RM1x. It's a pain but much less of a pain that editing each note by hand.
What I will say is that I'll have a much better backing track for the Tascam when I'm finished. It's been a good learning process going through all this and everything gets easier the more I play. It may be back to square one for now but I'll be back to this point in no time.
You live and learn.