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So, this time, I've give more of a blow-by-blow of what I'm doing. First, i loaded the corset the conventional way... but did not conform it. On the default V4 in zeroed position and zeroed morphs (sorry Steve, still playing with girl dolls, here ) the item loads with no poke-through anywhere. Ideal. Exported as Wavefront obj (single frame) with only the corset ticked - unticked everything else, including GROUND... you can do that quickly by just ticking the Universe box - and in Export Options, tick on:
[x]Weld body part seams
and
[x]Include body part names in polygon groups

No need to appologize for your choice of figure, I use both genders. You also don't need to export OBJ's with body part names unless you plan on keeping the OBJ Conforming Compatible. I would suggest keeping Group names included however since many material zones go by group names and it's convenient to keep those groups for such things as soft decorated, rigid decorated and constrained grouping. IE: A Belt on pants is perfect for constrained groups because it holds the pants up! Button groups make good soft/rigid decorated groups.