I´m actually doing it by hand, or better, using the replacing functions inside SED to fix the scripts.
I tought i just didn´t followed the manual or made a very embarassing mistake in something simple like using a free tool recommended by the gamestudio developers, i´m actually relieved that this was, in reality, a mistake by Conitec for offering an outdated link.
Seems to me that most users don´t try to update their old wdl scripts, instead their do it all over from the beggining or simple give up and migrate to another engine.