Anniversary 10-pack after vault end?

DAC169

So I got the Anniversary 10-pack from the season and it's sitting there because there's not much left in the vault I want. I'm considering waiting until after the vault ends to do pulls from a fresh vault, but I had a thought - how do 10-packs work for expired vaults? Does it pull 10 all at once from a fresh vault or 10 single pulls from 10 fresh vaults? Could I, in theory, end up with 4 Dino covers of the same color? Because the only other earnable 10-packs are Heroics, & they never expire, so there's nothing to reference.