The new mega dungeon is going to be very popular due to it rewarding a mythic vault slot on completion. But its probably quite hard and I foresee a lot of groups falling apart, that means you cant loot from the bosses you didnt kill yet if you run it again with a new group right?
And even if locked to your unfinished dungeon you can still complete the dungeon with a new group to at least get the vault slot right?
Supposed to be tuned to a +10.
I guess I assumed it was like any other m0, with per-boss loot locks.
hopefully someone can clear it up, if not I guess we find out tomorrow.
So other mythic zeros you can kill first boss, then leave group, join another group for same dungeon and have loot possibilities for second and third bosses in new group?
I thought so
maybe Iām wrong 
Think the deathless end run myth gear is group locked since if anyone fails it you all loose the buff and cant try again for another week.
Non-deathlesss should work like normal with a per boss lockout unless theyve changed how mega dungeons/0s work just tuned to ~10.