> Quote - I'm not following, wimvdb... how so?

The pink ring is the subdivision mesh (level 2). Technically it is a kind of spline surface representation which approximates a surface. The most important property is that for convex objects, it will always be inside the object. The original object (the cage as it was called) in this example is the green box. This is what DS exports when the artist wanted to have the pink object. The yellow thing is what poser makes out of the green object when smoothing is enabled. The smoothing poser uses is not a spline surface like subdivision (technically it uses pn-triangles), it interpolates, which means, for convex objects, like the green thing, the result will always be outside the object. When those two flaws are combined (export the green thing when you want the pink one, and then render with smoothing to get the yellow one), you will get considerable blow-up, resulting often in poke-through. A solution could be to generate the pink object when exporting and projecting the green object onto it to get a closer approximation. Could in principle be done in a script from within poser, because only vertices are moved around, if somebody wanted to try it (i do not).