Objective-c - Storyboard References uses refactor. How to return the folded new storyboard to main?

Question

The question is as mentioned. After I used it, some of them were not put into a storyboard. I want to put the ones that are still in the main into the newly created one. There seems to be no way to return, and there is no way to add the original ones to the newly created one. Does anyone know more about this feature?