From my system, that was exactly the case. I don't know what kind of mechanism they use, but I know it's a garbage one. I have tons of images in Pictures folder. And avast! just selectively picked few folders from it. Not even all the folders or entire Pictures folder. Granted, I have my data folders on drive D: (relocated), but quite frankly, these destinations are variable based, it doesn't matter where user relocates them, Windows is always aware of the path.