According to the badge report for the Sheriff badge here on MSE, the badge was awarded once in 2016 and once in 2017. The badge text specifies that the badge criteria is "Served as an elected moderator for at least 1 year.", but MSE, at least after the MSE/MSO split, has no elected moderators, only staff.
How did these two users earn the Sheriff badge here on MSE after the split? Are these cases of retroactive badge issuance due to errors or account merges, or have some users actually been elected as moderators here on MSE since it became independent of MSO?