Did you find a solution to this problem? I am having the same issue - developed the application on a free account using a particular bundle id. I then purchased the Developer Account and now it will not let me add the same bundle id!? I have removed the debug builds from the devices (i think all of them). I also changed the bundle id of the app that's associated with the free account, but i am still seeing the error you are having. Apple support haven't really been able to help.