When I start the IOS 4.2 update on my iPad, I get the following message: "There are rentals on the iPad "my ipad". You should transfer these movies to your iTunes library before updating this iPad. Are you sure you want to continue?" I do have a movie rental on the iPad that I haven't started watching. I haven't pulled the trigger on the update yet. As far as I know, there is no way to transfer movie rentals from an iPad. And I have a feeling I'll lose my movie if I do the update. Am I missing something? Is there a way to do the update without losing the movie?