Hey, Zalamander! Thank you for this... Something I've wanted for a long, long time. Works great!

Hello
Tell me if I am wrong

All works fine but as soon you edit your object normals are replaced by the Blender normal recalculated !
So in fact you must only use in Blender your imported object without "edit" you can just change the material!

So optimze your object's form outside Blender before the importation! :)

It's yet no so bad! ;)

zalamander said so in his initial post..

Aaaaahhh :)