Which brings back to my point the A32NX “overrides” the default A320. But maybe I didn’t make myself clear by what I meant by “Override”. It means the sim uses the files in the community folder instead of the core files. Everything still runs using the core files except the ones that is overridden by the files contained in the community folder, then that takes precedence.
I think you misunderstood with the term Overwriting, not overriding. Overwriting means to permanently replace the core files with the modded files in the core folder, which the A32NX doesn’t do. But overriding means it’s using a separate folder to temporarily use the modded files on top of the default core files, which it does.
But from the user point of view, when you install the mod, it’s not considered as a separate aircraft. Because it’s overriding the default A320. So as long as the A32NX mod is installed, the A320 that you’ll be flying is the modded version.