Ehehehe... I grabbed the file before you hid it and tinkered with it in TES4Edit.
Indeed there were a few unexplainable missing eyes and hair records, but after half and hour of click and drag (my wrist hurts...) I corrected all NPCs!
And now the bad news: I adapted it to the Integration Integrated mod. So no RBP, no LAME, and no standard Integration in my version.
I'm sorry, that probably wasn't very helpful at all. I could suggest as a solution to fix the mod after the CS spits it out with missing hairs and eyes could be manual TES4Edit fixing as I did. It's extenuating, but should work.
Actually, let me think... are you loading OCO after RBP in the CS?
If the answer is yes, which i assume it is since otherwise FaceGen stuff you work with would be vanilla instead of OCO, that's the problem: OCO is changing the races, overwriting changes by RBP and blocking out the new hairs and eyes.
To remedy this, don't load OCO in the CS, your file won't even need it as a master. Instead create a temporary work plugin in TES4Edit. Copy as override in it all the races in RBP, then drag and drop in it all changes made by OCO to facegen and face stuff, keeping RBP's stats, eyes, and hairs for when you edit the NPCs.
After you're done, the only masters your NPC changing file should need are Oblivion.esm, RBP, LAME and Integration, you can remove any other ones in TES4Edit or Gecko (Gecko recommended, TES4Edit can be... mischievous)