it doesn't over write or delete your list. it just slows the process down of getting it back. if by the time the all clear (it's fixed) notice is posted and your list is still not back you'll be told to contact the devs for them to look into it. last update was they were on pass 2 of 5. and it's taking a lot of time because people don't listen https://www.mangago.me/home/mangatopic/21212683/
Like late January pretty sure the 25th or 26th the site kept logging people out randomly, for me it was every chapter. And then the site finally went down and when it was functioning again, everyone’s lists were gone. Just disappeared back to 0. So they’re having to go back in and like manually add stories back to peoples lists, and they’re going in chronological order, so oldest users first, and so on. It’ll be a while til it’s all fixed unfortunately.

From what I understand, our lists are coming back, but only if we haven’t added any new stories that weren’t on our lists previously, since that overwrites our deleted lists?? ….I’ve added new stories in an “alright I don’t wanna lose this, it probably won’t hurt anything” move and I’m only just now seeing that shit. Does that mean my lists are gone forever??? WTF