This is a recipe for opening such maps (i.e., maps for World of Warcraft) under the 3.55 mod version (wasn't that the question? Or are we misunderstanding each other? ;) )
To clarify: some World of Warcraft maps don't start under "Equi" 3.55.
If you're talking about "Equi" maps not opening and running under World of Warcraft, that's perfectly logical.