I use Wings. Select edges on both sides of a UV/geometric seam, connect them (creating an extra edgeloop), slide the new edges close to the uv/gemoetric seam (both in UV & in 3D space). Once I have done this to all the seams - I export the new object out and use it in ZBrush. I have not examined the fact of whether it is just UV seams or geometric ones... I will have to experiment on that today. I knew "seams" were involved - so I just played it careful. EK