Sometimes i was lost in editing english pages too. But copy and paste was my friend and as i saw what i did, i didn't saved. after that i've thought to add a redlink in german is a good idea. Now first i copy the english text to the german side and then start translate from this. Before i close all english tabs. To be sure.
It is indeed Interresting whats inside those pages. I've tried to completely ignore cartouche stuff. Only the most important things are inside. Removing this is not a big deal here.
Maybe put a red info on top of all pages, that needs editing if cartouche is retired.