• missing notes caused by midi input issues
All MIDI data were from a .mid import - not recorded or individually inputted and were completely intact upon copy paste to an instrument track region.
• moved noted due to quantization
All notes were quantized and were "clean" as to start and end times in the list view. Nothing was done to them, but they mysteriously vanished at some point while working elsewhere.
• removed notes by (accidentally) deleting or undo
Possible, but not likely, unless the missing notes were in "selected" mode and somehow remained that way after multiple "clickings" in the piano rolls of this and other regions, then got deleted when I deleted something else in another region. There were too many such occurrences in the 25 regions of the file. If they were selected somehow, they would have to have been deleted when I used the delete command in a completely different selected region.
• wrong assigned key-commands
What possible key command assignment would randomly select notes for deletion? My basic key command usages are cmd-X (delete and copy), cmd-C (copy), cmd-V (paste), opt-shift-| (play from previous start point), return key (play head from 1.0.0.0),"*" key (start record in record-enabled track), space bar (start/stop) That's about it. Would any of these delete random notes? how might they be wrongly assigned?
• If you really like to find the issue, then do the steps one after another with a piano roll window opened
I always have a piano roll open in my operations in a region. I see no cause of the deletion. If I then select another region to work on and then come back to it, there may be one or two missing notes. The most common disappearance is the first note (quantized!) in a region when the first note occurs at the very start point of the region - I try to work around that issue by stretching the region start point to the left of the first note, but other notes mid-region also disappear (as shown in the attachment).
Now, here is some other nonsense with this particular file:
The quantization engine is haywire. Quantizing eighth note to the eighth note, for example shifts that note to the next beat or prior beat, instead of where it belongs. Getting a correct quantized eighth note requires 16th note quantization to do the job correctly in this file.
And another example of quantization weirdness:
Quantizing 16th note tuplets should yield 1.80.160 numericals in the list view, but the time points are off by one (1.81.161.).
This is after using quantization tools in the MIDI Transform area of the piano roll.
Might the deletions be due to this weirdness? The whole file was created by a .mid import.
iMac Pro, macOS 14.1 Logic 10.8.1
