I set the custom view with Ctrl+Alt+n (n is 0,1,2…0) and recall it with Alt+n. Are we talking about the same thing? The settings are saved in a Cameras.CFG file. Each aircraft has it’s own .cfg file. For example, the path for my PMDG 737-600 is C:\Users<username>\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\SimObjects\Airplanes\PMDG 737-600. Cameras.cfg files can be copied between aircraft. The exact path may vary but they will be a a LocalCache aircraft folder.
Hmmm… so the fact that MSFS “Reinstalled” itself after a HD change, means that all the Cameras.cfg are gone from my pre-reinstalled version.
So, essentially, I have to re-do ALL my aircraft cockpit custom views!
Except this time, I’ll have to build-out a master folder with every aircraft I customize and copy that aircraft Cameras.cfg for the next time MSFS decides to reinstall the whole game again.