A Deep Dungeon Possible Issue

[Reinha]

Does it save as you leave the instance thru the portal or will it also save if you choose to leave but after the boss is dead? If so you could leave on floor 50 but not screw anyone over.

It prompts a question "do you want to save now?" when you leave through the exit after the last boss. Not sure if it's possible to leave without saving after the boss is dead.

Is this true, can someone confirm this?

I've had a person leave the group and got a replacement in matched party mode.

Just need a aetherpool chest to spawn after each boss with guaranteed boost provided you meet the level restrictions.

This.