Painting the ground is not needed.Besides Schlumpfs method (will work for sure i think) you can just delete storwind and save every adt sw was on via menu> save current. Worked for me
Ok i didnt know that. But he ports over to 335 so it seems for me that this is not needed.
i don't see how that's relevant if we're talking about placing a cata wmo in a 3.3.5 mapto me though the best way to do it is to simply replace the old SW model with the cata one. no deleting, just model swap