I have just split up a part and moved some of the bodies slightly to create an effect that looks like it has been wrapped in a cloth. I am now trying to combine the bodies together so I can do a shell on the entire part, but I am getting the error "Unable to create single body that is the sum of the input bodies." The faces are still coincident so I don't know why this is coming up. If I suppress the body move features, it will allow me to combine them, so it seems it won't allow split bodies that have been moved to be combined with ones that haven't been moved. Does anyone have any tips on how to fix this?