I would imagine if this was the case we'd see this:
Like we did when Ifrit Weapons were introduced as GC turn-ins. (I just looked and even regular NM turn-ins got their own dev tag, so if any of those events dropped specific items for seals, I'd imagine it'd be noted.)[dev1433] Several adjustments have been made to expeditionary missions.
And those bullets are under the [dev1445] tag, so I'm gonna be absolutely flabbergasted if they aren't related to A Relic Reborn.