Don't use the dynamic hair room - that generates its own segmented line mesh. Use the dynamic cloth room. "Clothify" the hair, and edit constrained group. If you can use a modeler program, I find it easier to select just the right vertices/polys in a modeler and group them. If you assign those polys to a unique material, then in Poser's cloth room you assign that material zone to the constrained group in one shot. :-)

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5