Okay, this is a confusing question and honestly no one I've spoken to even knows the answer.

I know that if you create a fixed party, and run 51-100 with zero deaths you can then walk out of the lobby, and head in to start 101 at a different time. My question is, after you start the 101+ levels, once you and your group have passed one of the 10th floors and are sitting in the lobby, can you walk out to continue at a later time. Pretty much, after starting 101 are you trapped for 8-9 hours till you finish or are killed, or can you guys walk out and have a break till tomorrow since you beat a boss and technically hit a save??