Responses
They're re-added by date, so it probably won't take that long. We're currently at 2023, and considering it's been a slower process for the more recent years (compared to the fact it took 4 days to cover the 12 previous years), I think about 3 days should bring us back to normal
My already read are populating at about 100 mangas a day. Since I had about 4000 left to populate, I think it will take about 40 days before I get my already read up to date