Resolved - Confirmed with affected users that this incident has been resolved. Apr 29, 20:31 UTC Monitoring - A fix has been implemented for events in all cases and we are now monitoring this issue. Apr 29, 20:09 UTC Update - We have determined the source of the issue and have it resolved for Google events. Events added via Office 365 are still operating sporadically. Continuing to investigate. Apr 29, 13:48 UTC Investigating - We are currently investigating an issue that is causing events to not be retained after saving the Digest.