Some Multiauthor stories seem to have multiple entries in the TBA list (authors Sue Smith on P1, Nikki & Sinsationalsub on P6 as at 2022-03-13)
I suspect that this is because those authors have already been archived, and the co-author (Powerone) has just been added to the TBA list; that author also has other stories co-authored with Jessy19 (who is NOT up for archival) with no such problems
It's probably not worth trying to fix this as there are so few multi-author stories, though I suspect it was introduced in fixing the prior multiauthor bug (multiauthor stories going premier-only immediately the last author is up for archival, with no grace period - which appears to be fixed now)
ETA: I'd rather have this bug than the no-grace-period one.
