I have a bunch of old albums on MobileMe filled with many photos from an old iPhoto library that aren't included in my newer iPhoto library on my MacBook Air. I was content with having them on www.me.com/gallery but when I just launched iPhoto it downloaded all of them to iPhoto. Now I'm not sure which photos/albums I already had in iPhoto before this migration and which ones iPhoto just pulled from MobileMe for my "convenience," but I'd like to get things back to the way they were before I just launched iPhoto. How can I do this? Thanks!