[rsilva712]

yea, it will treat them as the same program. What I would do is move your ffxiv folders from documents/my games and from program files/squareenix to another folder, like your desktop, run the trial installer, make your trial, then move the folders back to their original locations. That way you dont have to redownload all the patch updates for the game.

Or if you have access to another pc, install the trial installer there.