Board Thread:General Discussion/@comment-26569706-20190110014315/@comment-34804319-20190110211351

AFAIK, in my experience the Achievements feature will start counting edits from the time it is enabled, not from the beginning of a wiki's creation (unless of course it has 0 edits when Achievements is enabled). So it looks like your wiki's Achievements were enabled back when it had 8,501 edits