I've not had any problems importing P7 pz3s into C6pro once I came across the tip to delete the lights in Poser and resave the pz3.

Dynamic hair - C6pro now has it's own dynamic hair so not being able to import Poser dynamic hair isn't too much of an issue. I also understand that a plugin will 'soon' be available to also give dynamic cloth capability within C6pro

This pz3 imported fine (V4.1 and juli hair) once I'd deleted all the lights  - this rendered in about 40 minutes on relative high quality settings (AMD FX60 dual core with 2GB ram)