If any of this sounds out of your league or not worth the time, you could drag all code/groups into a master group that you can collapse and copy/paste quickly. It's not ideal in my opinion (single frame + editor is the best) but it's very simple, and quicker than going through every line and every group to copy and paste them.
I usually do that even if I don't copy and paste code. My event editor ends up looking something like this (groups in brackets):
If I would ever want to move my code, i collapse then copy the [Game] group.