Parallels update causes Win7 reactivation failure?

I installed the latest parallels update. Running windows 7 I had to reset my HardDisk for the virtual disk (it seemed to lose track of which bootcamp disk was the right one). Upon starting Win 7 I had to go through the entire authorization process for Windows 10 minutes because entering the windows product key, it said it was a invalid installation because the hardware had changed.

THIS IS BOGUS. Is this going to happen every time if I decide to boot directly into bootcamp and then change to parallels virtual or vice versa??? Is windows 7 going to see my hardware as a new install??

Taking 10 - 15 minutes every time I want to run Parallels is going to be a very bad thing...