Step by step on how to resolve the move file 3 installation issue.
1. Open up the UserCfg.opt
This can be found at:
MS Store Users: AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache
Steam Users: AppData\Roaming\Microsoft Flight Simulator
2. Scroll down to the bottom of this file to an entry called "InstalledPackagesPath"
This path tells MSFS the location of your Community and Official folder.
3. Save what the path says as you'll need this for step 7.
4. Change this path to a different folder let's say C:/FenixInstall
5. Run the Fenix installer.
6. Once it's complete. Open up the folder created, cut the folders inside and paste them into your actual community folder.
7. Then change your "InstalledPackagesPath" back to the original path which was saved in step 3.