Vellus 2.0 not "Sticking" with Genesis 8.1 Female - FIX (CLOSED)
Fix: Unlike with Genesis 8.0, for which SBH had to be left UNPARENTED to the character in order to follow her around the scene, you have to PARENT Vellus 2.0 to the 8.1 character. Also, make sure you load the hair onto the character while she is at World Center.
The bug which required the SBH to be unparented has apparently been fixed by DAZ with 8.1. At least that's my initial interpretation.