Quote - i don't know if this is the same or a similar problem.....

examining the scene files, i found the parenting to be correct but when i looked at the parameter dials, i found the hair had  offsets. when i zeroed them, the hair returned to position. ???  i am adding a zeroing function to my script to adjust but something seems to be different about some poses.

i hope this information is related to the mystery you are experiencing....

Yep, I noticed the same thing, although not with every hair prop I was testing. Thanks for the info, Dennis.