For Plat scales appear to be saved in the registry under
HKEY_CURRENT_USER\Software\Cakewalk Music Software\SONAR\Platinum\Scales
I also see entries for other versions, example X3 Prod scales are under
HKEY_CURRENT_USER\Software\Cakewalk Music Software\SONAR Producer\X3\Scales
The key names and values don't look like something I could easily decode, and I have no idea how you would go about digging them out of other versions and importing them into the correct place.
Maybe somebody really smart knows how