Exporting ruins smoothing?

[FknLeon]

Hey Guys,

 

I need some help. I'm working on a model for San Andreas that I can get to export but when I load it in game or import it back into 3ds Max through Kams script its destroying some of the models smoothing.

 

Photos:

 

BEFORE:

 

http://i.imgur.com/f0j7Zoq.png

 

http://i.imgur.com/1Cr8k3I.png

 

AFTER:

 

http://i.imgur.com/lIugX6G.png

 

http://i.imgur.com/bdM0O9V.png

 

How do I prevent or fix this? Thank you in advance.