Yes and it also doesn’t work if you need to orient the parts in a certain way. I mean it would be pointless to change the coordinate system in SW just to upload it at the right orientation in PreForm.
I almost always use the automatic support generation, but I always tweak them afterwards.
I have often been the advocate of not turning PreForm into a feature creep unorganized piece of software , however I think, when following a correct workflow., that these copy/paste operations really have to take place in PreForm and not in the modeling software.