Mod requests (orders).

So, does this apply to any magical wall, or specifically to a wall like Kha-Beleth's shield?

In the map script, I specified a different (custom-created) folder for the arena's location. I moved all the arena files into this new folder. These files contain references to the wall effects. I changed the references to point to a new (another) custom-created folder and moved all the effects there. All of this only applies to the final mission map and doesn't affect anything else. That's how I did it.