I'm looking to upgrade from 360 to xbox one around Christmas time. If I plug in my 360 version of destiny do I play on the Xbox one servers or the 360 servers? I know there was a way to upgrade your version to next gen, but it was only for digital download and I have the disc. (Which btw is really dumb, I don't need a new disc I'd gladly upgrade to the digital version instead if I could).