Missing MIDI clips after changing sample rate

[abt]

When saving a session from 44.1KHz to 48KHz using "Save copy in", no matter what I do there's a few tracks missing a few midi clips. I've tried everything, consolidating clips, duplicating tracks, etc.

If I create a new session and use import session data I have the exact same problem on the exact same tracks.

If I do the same thing but save or import from 44.1 to 44.1 it works fine, it's only a problem when the sample rate is changed.

I've just upgraded to 2021.12, the problem remains.

[bz lewis]

I'm having the same issue, except the midi clips are there but the notes are missing.