3ds Max :: Smooth Model Without Smoothing UV?

How to smooth a model without smoothing the UVs?The problem is that when I apply turbosmoth or meshsmooth to a model to get better and more smooth textures like AO, the UV are also smoothed and then they dont match the lowpoly version.

The oly workaround I found for now is to get the model into Mudbox, smooth there (Mudbox doesnt smooth UVs) and get it back to 3D Max. But would be better to control that in 3D Max and Mudbox doesnt smooth in the same way anyway

I also found a lot of UV problems when I try to render different UV tiles because Max only render the main one (0 to 1). There arent any scripts out there to automatize stuff like that and be able to render differents UVs tiles? Because right now what I have to do is change the UV to do a render to texture or split the models into UVs pieces wich is a pain and dont get the best results at all.

I still dont believe that they dont fixed things like that in 3D Max 2013 while even Mudbox works with UV tiles.