Just check "User Guide". From "Melody - Import Melody from MIDI file..." select MIDI file then select MIDI channels (1 to 16) to import all tracks.

However, instrument sounds may changed. In fact, I export a SMF from BIAB then import back to a new BIAB song, all the sounds are changed, including drums.

Any advice on export/import SMF so it keeps the same channels for standard MIDI sounds?

Thanks

LJ