There is a way to Demix a midi region in different notes (maybe you have to remix the articulations of every element and save them as single stem). Here is the info at https://support.apple.com/en-gb/guide/logicpro/lgcpf7c0f28c/mac . I think you should try with “Separate Note Pitch” tho.
Reply To: Separate midi file – Logic Pro x version: 3.2.4 Operating system: macOS Big Sur (11)
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