I try to port a Wotlk -> Cata (4.3.4 ) map and nowadays this tutorial is the only one that explain how to do it (nice tut, btw).
But unfortunately, I can´t find some tools you use (try to search in this page and in google but this post is the only result).
I will be grateful if you or someone can re-upload the tools:
Pagdzin & Mjollná ADT converter
Sorry if there are some grammatical errors, but english is no my first language.