I configured a USB to my Xbox today. I put both Black Ops map packs on it just to conserve some room on my nearly full hard drive. I go to play Black Ops later today and it tells me I don't have the map pack. I thought it was just because I hadn't selected the USB device. So I went to the main menu and selected it, but it asks me to configure it. Again. So now, if I configure again - it's going to delete all the stuff on it? How do I get my stuff back without re-downloading? I haven't done anything with it yet.