I don’t think I've ever used this sort of time jumping with code. If I'm refactoring or testing a different segment I just comment out the original for visual m

I don’t think I've ever used this sort of time jumping with code. If I'm refactoring or testing a different segment I just comment out the original for visual memory reference and refactor based on the commented segment. Once I'm done, I chuck the commented section. It's nice to have the reference so I don't have to commit anything to memory.