Delete MIDI Events Outside Region Boundaries
Deletes events that are not in the current region. This is confusing to me. If I insert notes outside of a MIDI region the region gets extended to include the new notes. They are not “outside”. If I shrink the region (move back so new notes are not visible) the notes are not in the region. If I extend the region the notes come back.
If I delete events outside of the region boundaries while the region is “shrunk” then the events are deleted.
I am not visualizing a workflow where this would happen.
Delete notes in the Piano Roll Editor in Logic Pro — Apple Support
In Logic Pro, choose Edit > Delete MIDI Events > Outside Region Borders from the Piano Roll Editor menu bar.