I thought iMovie used to just have the "Events" library. Why does it now have a iMovie Library as well as the All Events section, what's the difference, and after upgrading from 2011, is there a way I can rename Events? Or will that destroy all my movies / Projects? EG: I have stuff all over the place, with old film footage imported recently that appears newer than I want it to. It's from the 70's! So I'd like to reorganise my Events by folders, and dump everything into the right annual folder. If I rename and reorganise all my Events into new folders by year, will that totally break all Projects that might be based on those events? Or will the Projects update their links to those files automatically? Just how 'smart' are the Projects like this?