Agreeing with Nanette on the morphing brush: with extremely - or sometimes, even moderately - low-res mesh, the morphing tool spits the dummy. I've had to export dynamic clothing mesh and add geometry in order to fix folds and stuff with the morph brush after a sim that didn't go altogether as planned.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks