I fought the Sherriff... I mean - Poser, and I won! Bringing in some OOT hair, Dawn started flapping her arms all about again, (and this was to fit some hair, there was NOTHING but the hair and the base Dawn with no morphs inj'd, no skin applied!) ..... So I posed the hair, then I EXPORTED the hair with most of the boxes checked... closed poser, cleared cache, re-opened, imported the hair, placed it on Dawn, SAVED AS A PARENTED PROP, closed, then re-opened my scene that had Dawn, and M4 (THAT IS another story) all dressed... and put the hair PROP on Dawn.... NO FLAPPING ARMS! I just had to click to re-apply the chosen hair material...and it rendered FINE!
Not sure what the darn cr2 hair mesh is doing, but I'm doing this 'fix' next time I want a pretty, complex hair and Dawn starts acting like she wants to take off and fly around! HA!
PS...and this is cause no one could figure out how I could make a NULL.... or use it... but hey, solved my problem!!