Trigger Polyhedron Problems ...

Ok, Ive exported a Trigger from map file

with a door.. and all works fine after magicbutton();

but if I save the mission and reload it,
I cannot trigger it anymore the trigger code still runs but the testObject function gets an empty poly list from the player for some reason.

here is the polyhedron :
3.0000000 -3.0000000 -3.0000000 -6.0000000 0.0000000 0.0000000 0.0000000 0.0000000 6.0000000 0.0000000 6.0000000 0.0000000

and like I say it works fine when first loaded but saving in mission and reloading it wont work.

and leads here?
I hope Mark reads this as he will prolly maybe know why.

if I change that polyhedron with the default one it works fine .. if I apply that polyhedron to a working trigger added thru mission that trigger wont work either.