Mac 2011 3.4 GHz Intel Core i7 Sierra 10.12.5; Finale 2016
The problem: I'm exporting a MIDI file from Finale. The midi file has no rests - it quantises the notes to compensate. It used to be fine, just what you'd expect, rests and everything.
Top screenshot shows an original couple of bars in Finale; second shows Band in a Box MIDI import; third shows Finale MIDI import - so it's obviously not BIAB, it's a problem at export in Finale.
Annoyingly, the parts are reversed when imported to Finale, though that's no big deal, just a niggle.