[H] Windows 7 Media Center licenses

[Winterlight]

Cable TV in my area is provided by COX, and unfortunately they 
encrypt every channel except for PBS.  In the last couple of months I 
have had inexplicable glitches that resulted in Media Center loosing 
it's licences for TV shows that I had previously recorded. When this 
happens I can't play TV in Media Center using my Silicon Dust network 
Tuner, and all the encrypted TV shows that were recorded are now 
inaccessible. I usually have to work through a troubleshooting 
process involving the reinstall of Media Center Playready, and 
success with MC always results in a loss of any existing licensing. 
Even when I image the hard drive, and restore it, the licenses are 
still gone. This makes the idea of building a video library with MC impossible.

This is not normally a problem, however, this has happened to be 
twice this month, and once it happens any video library I have is now 
gone. Is there any way to back up licenses so you can restore them in 
the event MC goes bad?