That must be an old version of Biab as the new one will split the channels of the midi to Utility tracks.
If it's all going to the Melody track you need to move each channel to another track by selecting all notes on a channel (by Ch drop down in piano roll) and cutting and pasting to another track.
EDIT: I see you have Playable Tracks so it must be a new version, try drag and drop the midi onto Biab

Last edited by musocity; 12/22/22 09:46 PM.