There are a lot of problems with that, and there's no easy way to do it.
A new image record gets made as well. There's not a good way to keep track of the images on disk while they move around, so it needs to be done in that admin, but it's not ready yet. I'm working on it!
For now, you can try to work the database around, but you'll have to delete the new image id's, move the old ones and change the album ID to make everything match, and even then, no guarantees... Sorry...