Xbox 360 December Dashboard Update & The Cloud

Hi Peeps I've been using the new dashboard in beta on my 2 Xboxes for a few weeks. I've sucessfully uploaded all my game saves to Cloud Storage But I dont see the option to do the same for my actual Xbox profile,it doesnt allow me to just copy/move it to the cloud from my USB Stick. And When I try login on without the USB stick containing my profile it prompts me to insert it..Any Ideas?