Quote Originally Posted by Kogasan View Post
How is leaving at floor 49 gonna get you anywhere I believe once you leave and you don't finish to a save meaning beat the 50th floor boss you loose any progress you have made. Correct me if i'm wrong but I think that's how it works.
The idea is that if you've done floors 40 through 49, but didn't get any upgrades, you're not losing anything if you exit without saving your progress.

If you instead proceed to kill the 50th floor boss and save your progress, you've still not gained any upgrades, but now rather than being able to enter on floor 41, you have to enter at floor 1 and clear floors 1 through 40, where you either can't get upgrades or can only get them a very small percentage of the time.

If you find yourself in that position, it's in your best interests to abandon the run. An unscrupulous individual could save themselves the 30 minute cooldown by simply wiping the party, rather than leaving the duty.