My question is if there are (if any) ways of backing this data up when i ultimately do a reinstall of P3D?
If you just do a reinstall of the sim, or even a GSX reinstall, there's no need to do a backup, since none of your settings will be lost. The only time you must be sure you do a backup is:
- When you reinstall Windows from scratch
- When you create a new user account in Windows
In this case, you must backup this folder:
%APPDATA%\Virtuali
Which contains all your GSX airplane or scenery customizations.