Here's what I did: I recorded something on a Roland RP501R digital piano and then converted the MIDI file to a CSV. I exported a MIDI Type 1 file from NWC and then converted it to a CSV. I noted a very important difference: the MIDI file recorded on the piano contained a Note_off for every Note_on while the MIDI file exported from NWC contained no Note_off commands at all.
Is there a way to have NWC include Note_off commands in the MIDI export file?
I do see on https://noteworthycomposer.com/faq/64.md that "A MIDI file is not based on visual notation, but on commands to turn notes on and off." I don't see any Note_off commands in the exported file.