If you mark a group of notes with staccato dots, accents, tenutos, etc., you can undo it but highlighting the notes and clicking the symbol again.
I understand why this doesn’t work with slurs since sometimes there are nested slurs (slurs under other slurs).
That said, I wish there were a way to remove slurs without clicking each one and deleting them (which requires great care not to highlight notes or other marks). I thought highlighting the notes and using Shift-S might work, but it did not.
Is there a fast method for “unslurring” a group of notes?
(Call me an indecisive composer, but I often change slur markings as I am working out a piece. The ghost of Maurice Ravel has scowled at me many times.)