So I'm finally upgrading to genie drv along with 3 genie minis...getting ride of 2 HD dvrs and 2 hd receivers. Somebody told me that I should keep 1 of my HD dvrs instead of replacing it with a genie mini. He said this would allow me to keep my recorded shows. Is there any other advantage to keeping one of my HD dvrs? And will this in any way "screw up" the genie system and not maximize features/functions? Thanks.