MTGroove.
i'm haveing trouble understanding why you need to work in this fashion, aggregating midi.
so could you go back to the beginning why ?
what is your situation.

normally when i do a song from scratch, my workflow is..
in brief...
1. create chotd sheet.
2. go through zillions of styles
noting down which rt's//rd's//midis work best.
ie instrument id's.
3. in rb right cliking over blank traks and generating
audio and midis useing the instrument id's i noted down and running sound picture tests ...sorta idea.
useing plug in vsti on midi traks etc etc.

thus i never get into midi aggregation.

so please explain why the aggregation, cos might be alternatives.

best
om

Last edited by justanoldmuso; 10/15/21 02:50 AM.
my songs....mixed for good earbuds...(fyi..my vocs on all songs..)
https://soundcloud.com/alfsongs
(90 songs created useing bb/rb)
(lots of tips of mine in pg tips forum.)