Tweedily doo Ferals! Tis Le Tyto here (asking her first question for game help XD). So I'm afraid I'm in a bit of a jip, my friend Hailstar56 made a map pack for a rp that I joined and I've just recently downloaded the map pack, well there are some glitches I would just LOVE to take care of! See the images below for what I mean:
What Hail sees-

And then, what I see-

These are two different meshes and for some reason the game thinks he use the one that he didn't and gives me big giant bridges instead of the small ones he used. We've tried all we can think of to solve this, including deleting some of the exports that came with the map pack download, but all is to no avail. So please, I would really appreciate some help here! I need to get it to what he sees so I can move about freely in the map without having to struggle to get to some places that would normally be a sinch without glitching inside a big giant bridge. Thanks!
EDIT: Sorry, one of the images posted was wrong, it should be fixed now