Palace of the Dead DC'd Party Member Warning Message

My party and I just finished Palace of the Dead floor 140 and a party member DC'd right after we finished the 140 boss. We left the dungeon with the pt member still DC'd thinking nothing of it. Turns out if you leave the dungeon with a pt member DC'd it will corrupt your file. You cannot progress with that member still in your party.

I checked the the recording I took on my ps4 and it turns out there is a warning text box. However, it says: http://imgur.com/a/uBCuc

Which would imply AT LEAST progress up until floor 131 was saved. After sending a message to the GMs, I discovered this is incorrect.

Suggestion: Please make the warning more descriptive. As it stands now it implies the save file will revert to the previous ten floors completed, not excluded the DC'd player(s) from future floors. We now have to start from floor 51 for a fourth time.