I've found that even if the notes are entered precisely (using Piano Roll Editor), there are times when it has problems as you descibed. It seems that if the notes are not precise, BIAB does a pretty good job at the notation. Best bet is to keep the notes as precise as possible even though it can be a cumbersome task using the Editor.

I only have a few printouts where I was not able to resolve the quirks but on the most part, they are fine. Also, keep in mind that if the style is Swing, the Triplet Resolution will always be checked when the song is open - even if you unchecked it and Saved.

R