Yep..I had the flip hair installed to P4 but wanted the upgrade in P5...copied/pasted the geometries/zygotehair/ folder to Poser5/runtime/geometries and it worked. Could have just copied zygotehair/*.obj file, but I was in a hurry and did the entire folder...

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854