Hello.
I have a major problem i’m unable to solve.
From mudbox 1.07, i exported a mesh to 3dsmax 9.
So i have exported the first subdvision level (level 0) from mud to max.
In 3dsmax, i deleted half of the model, did a symmetry, slightly modfied the mesh.
Afterwards, i joined the 2 parts and exported as an .OBJ.
In mudbox, with “import as a layer”, i import the newly modified subdivison level and put it in place of the old one.
Here what i get 
The model is not unwrapped.
I guess deleting half of the model and recreating it messed up the vertice.
Is there a way to solve this problem?
To zbrush users:
By the way, does the same thing happen with zbursh?
