We'll when it happened I did check the Piano Track Score, and it counted correctly, there were no extra / missing notes or rests. The notation was fine.

But now I'm in trouble because I didn't freeze the tracks, and now I cannot reproduce the same notation.

But, it did definitely check out correctly (timing wise).

Note though that it was a RealTrack, not MIDI, and therefore I presume used the 'MIDI' equivalence/transcription as input to create the XML.

Yes, the PPQ resolution could be related. It may just be integer truncation where a value of 0.5 or less is rounded down, and > 0.5 is rounded up. Just a guess.

I assume it will happen again unless it gets some attention.

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