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Can you list the campaigns? I found five, But i can't seem to find a sixth.
To kill Revan. Artillery, Bombing runs, and Orbital bombardment are fairly effective. DO NOT THROW HEREOS AT HIM, he will turn them into mulch. I've found that the rebel artillery kills him the fastest out of all the units currently in-game. Only use missle units against him, anything he can deflect will ruin your day. If all else fails, kill him in space, MUCH easier.
I've noticed that problem too, but the UNSC corvette also leaves permanent debris as well.
Start in "C:\Program Files (x86)\LucasArts\Star Wars Empire at War Forces of Corruption"
Target "C:\Program Files (x86)\LucasArts\Star Wars Empire at War Forces of Corruption\swfoc.exe MODPATH=Mods\CaW"
Those will be the correct start in and target for the CaW shortcut, assuming you don't have it installed with steam.
The most likely reason you got errors when trying to extract into your SWFOC folder is that you didn't run Winrar as administrator so it didn't have permission to edit that folder. Aside from that, just move the icons, and if the file path is incorrect just right click and go into the properties to modify it to the correct filepath. If none of that helps Pm me with whatever new problem arises and I'll help you out.