Sounds like the instrument patches are hard coded into those (presumably) imported MIDI files.

Since imported MIDI files all come into the Melody track, I would suggest going to notation view and clicking the "#" symbol to bring up the MIDI event list for the melody track. You will probably find the hard coded patch settings in the event list. Just delete them, then set the instruments from the main BIAB interface, and save.


John

Laptop-HP Omen I7 Win11Pro 32GB 2x2TB, 1x4TB SSD
Desktop-ASUS-I7 Win10Pro 32GB 2x1.5TB, 2x2TB, 1x4TB SATA

BB2024/UMC404HD/Casios/Cakewalk/Reaper/Studio One/MixBus/Notion/Finale/Dorico/Noteworthy/NI/Halion/IK

http://www.sus4chord.com