QuickTime Pro key in Windows registry

Are the registration key and other info needed to re-register QT Pro 7 for Windows written to the registry? Or stored elsewhere?

With the recent news of support ending, we are planning an effort to uninstall QT on our Windows machines. In the uninstall script, I would like to look for QT Pro registration info and back it up prior to uninstall.

Any pointers appreciated. Thanks.