OK. As I said, I'm a bit surprised that the system is changing the file ownership, but I think you're going to have to use Terminal to do this. It's easy to do. Just open Terminal, type:
with a space after the p. Then, drag in the file you want to restore, and terminal will type its whole path for you. Type a space after that, and then drag in the folder you want to restore it to. Press Return at the end, and you're done!