I am thinking of upgrading from the normal sized DSi to the XL model but I have heard that you can't transfer games onto a new one from your old one via an SD card and that they are system bound. Is this true? I know I had to get my DSi replaced by Nintendo last summer because of the shoulder button breaking and they put all the games I had purchased on the new one. I would assume I have to go through Nintendo if I want to get the XL and keep my games wouldn't I?