I have been plagued by this since I updated to N6 from N4. Repro:
- Create MIDI track
- Create 2 MIDI parts
- Draw in a note at C-2 in 2nd Part
- Glue parts together
The MIDI note will now have changed octave to C-1. As all of my Keyswitches start at C-2, this bug has caused me a lot of wasted time.