Hi,
I don't recommend the user of MassFX, in fact, I think is deprecated in Ornatrix, use Moov Physics instead. To export a cache of the animation add the Animation Cache and click record.
Then import the resulting cache as Ornatrix alembic, add Animation Cache to the resulting BakedHair object and load the same cache again there.
Jeordanis Figuereo (Product Designer. EPHERE Inc.)