I've been trying to edit and play around with the CIS star destroyer hanger but there is a wrong collision on one of the sides of the hanger. One side you can go through, and one side you cant. I should be able to go through both sides of the hanger.
Does anyone know were this collision is in the CIS hanger so I can delete it.

I don't know what you've done already, but you'll probably need to use the '-donotmergecollision' switch in an option file. This prevents the game from collapsing the collison which usually occurs at model openings.