Just check in Preferences - Channels, check that the melody Midi channel is still channel 4.
I have found that importing Midi files changes the channel setting. I have reported this but not sure if it is just on my end or a BIAB problem.

Also, writing harmonies to Soloist track has same effect on those channel settings.


iMac, 3.7 GHz 6-Core Intel Core i5, BIAB MAC2024 (802), Audient iD4