If you set maximum transparency to something less than 100% in Poser than the item won't work as designed in D|S, because that goes from 0% opacity at the black end to a maximum opacity at white (so in effect the range is shifted so that it butts up against transparent instead of butting up against opaque in Poser). If that is your issue then you have two options - adjust the tones of the transparency map so that it covers the whole 0%-100% range in both application, or use the Layered Image Editor in D|S to add a white overlay to your transmap with the opacity set to the minimum value you want (so if your max trans in Poser was 80% you'd make the white layer 80% transparent).

The other monor issue is that you mustn't have transmaps applied to surfaces that are meant to be opaque - it's another side of the same thing, in Poser if the max transparency is 0% then the map has no effect while in D|S if the max opacity is 100% the map may cause the surfaces to be transparent if it isn't white.