If you are talking about Neroxis generated maps, I worked through this the other day with the help of Arma and a handful of other folks (thanks guys!). I have a bat file that renames the folder/files, find/replaces the file content references, and hex edits the scmap all in one go. It does everything Arma listed for you. MadMax, you have to edit the scmap or the map doesn't load correctly once you launch a game on it. Textures do not load.
If you follow Arma's steps, you should be good to go.