Went to do this quest and found that the quest seems to have been over written with a Horde invasion and bombardment. No cargos to burn and no Parasitic Mindstealers to fight.
What I found were dead npcs stuck in ice traps all over the place, with a Horde air ship throwing bombs in the area…
So cannot even do this Proudmoore WQ because of this mess. I reported this in the game but not sure anyone will even bother to see it before the WQ is done in 17 hrs.