Census change history: Sync Alerts missing as of last 2 days

Census reported a major Sync Engine outage from 2024-09-20 20:18 UTC to 2024-09-20 22:55 UTC (2 h 37 min). Sync Alerts had been deleted from its database, preventing email alerts for qualifying sync runs over the prior two days. Alert data was restored, and Census said alerting should work again going forward.