Saving from DVR

Is there a way I can add more movies & concerts to “My Book” with a different Dish Network DVR without losing all previous shows that are saved on it?  When I try, I get this message on the TV.;

The attached USB storage device is currently configured to use with another Dish Network receiver.  USB storage devices may only be used with one receiver at a time.  To use this device with this receiver all existing archived events will be deleted.  Do you want to delete all existing events? 


I don’t think this is possible. I recommend that you contact your cable company or DVR manufacturer and ask the same question.