Ok, I think the answer to my question is yes, but I'm not 100% sure and don't feel like mucking around.
Let's say someone (oh... dunno who... no one I know, a friend perhaps) posted a LO to the gallery, then that person realised the date on the LO was wrong (not that it matters THAT much but you know, it's a good opportunity to ask the question... for my, er... friend, of course!
Ok, so if I were to go to the photo EDIT page, and upload another picture it its place, would I break the gallery or would the picture seamlessly replace the previous picture?
I *think* I tried it once and it worked, but I think the photo wasn't 100% uploaded, it was just in the "waiting" area.....
Do we know, or should I just do a test and report back? One time I think I tried and it broke the thumbnail....
then now I just remembered
Suzie... you have some images replaced by "out to be published"..... so you might know the answer?