I'm not at my PC right now, but I guess that you have the outlines just on DSON figures. When importing via DSON, it looks to me as if there are two meshes, one a slight bit larger than the other, and the larger one renders black. That's your outline in Preview.

Export the figures via Poser Exporter from Studio, and load them without DSON. You will no longer have the outline. It's the only way to get rid of them that I know.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

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