No idea. I'm a Sakura fan (even though I think NaruHina is perfect) and this lack of attention to her irks me.
It's like Kishi has no use for her anymore. Her ONE use in the whole war, which is to HEAL, just got taken over by Hinata in 617. I mean, instead of Hinata jamming Naruto's shoulder into place with her gentle fist, couldn't Sakura have done what she does best (HEAL!!) to fix it?
even kishi forgot about her.
Hell even akamaru got a kyuubi cloak.
Sakura went to go heal the Kages.