There's a handful of scattered files, most are in that Square-Enix FF14 folder. Some are in the Documents folder.

When I tried to do this, I couldn't move at all with the keyboard and found the key bindings were locked in at blank. When adjusting them, these settings would not take.

I ended up re-installing the game to fix all this.

This is not to say that you won't have your own experiences with it. But this is what happened when I tried to just do a copy of the files over.