Rocket Buggy is supposed to do that, otherwise peeps who choose Marauders over SCUD launchers don't have Artillery.
But if you want to do this change anyway, then set the countering weapon's range to match that of the buggy and setting BOTH ShroudClearingRange and SightRange of the object to the weapon's maximal range.
Quite personally reading from what you've done I don't see the problem.
But have saved these changes?
Do you have the .inis in the correct directory?
Originally Posted by: Zatsupachi