It’s easy to transform a group of notes into tuplets. But I made a mistake and entered many 6:4 tuplets as groups of two beamed 3;2 tuplets, like this:
Selecting the group including the tuplet machinery (brackets, ratio) and using the popover to change to 6:4-4 does nothing. I have to enter the set again. Is there a way to do this? Am I out of luck? Should have done it right the first time!