You will probably want to
uncheck "Include figure names in polygon groups"
check "Include existing groups in polygon groups"
uncheck "Weld body part seams"

What your going to do with the figure in C4D and what version of C4D you have might make a difference.

You should try combinations until you get what you expect after importing.
If your planning to export the figure back to Poser, you'll need to check what C4D exports for each combination.