I'd like to see an option to "lock" expressions in position. In the course of editing, too often I need to restore an expression after editing that needs to be there - especially when alternating between swing and non-swing sections of a piece. Frequently the Edit Filter is not up to the task, because I may want to retain other expressions in the bars edited.
The Expression context menu might be an ideal place for it...?
Mac OS Mojave 10.14.6