Fixed on both import and export in Pro Tools 5.1:Export: when a note off occurred at the same time as the next note on, we sometimes put the note on before the note off. Now we always put the note off first, avoiding overlapping notes at the same pitch.Import: When we run across overlapping notes at the same pitch, the first note is cutoff at the attack of the second note, and the second note continues until the BOTH note offs are seen. Previously the second note cut off when the first note off was seen, which was usually the note off corresponding to the first note. When you put the two above behaviors together, when we exported a note on before the note off, the import would cut the second note quite short.