Recording Arpache 5 output to MIDI track

The problem, and the whole reason I got into this mess, is that neither Export nor the Merge function produce output that is like what I actually hear with Arpache running. I really don’t know why this is, but it’s annoying. Sometimes it vaguely resembles what it should, but then I’ll have stray notes going all over the place. For instance, just having a bass line, where I hold single notes and have Arpache playing a sequence of 1/16 notes at those pitches should be fairly simple, but in the Exported or Merged versions, I will end up with octave transpositions at odd rhythms, the changes not starting where they should, etc. I really have no way of accounting for why it would do this but it’s consistently wrong.