I have 2 ea roamio OTA bought 1 year ago model TDC846000V. I have a replacement on the way from TIVO because of an issue of not being able to connect to TIVO to get the guide info. This is the second time having to do this. My question is can I remove the HD from the one being sent back so we can keep our recorded shows and put the new HD back in the one I'm sending back. They get there box box with a new HD, just not sure it will work. Thanks.