When an event is deleted from a published schedule, it will no longer appear in the published schedule reports. 
There is one location in the system that stores the information for deleted events: The Change audit log.

1. Navigate to Report > Administrative & utility > Change audit log.
   
2. Select Application from the audit report types.
   
3. Scroll down to Schedule Event and click Report.
   
4. Enter the date range that includes the deleted event then click OK. You can also enter search text to narrow the results.
   
5. The report shows when the change was made, who made it, the change type, and the details including the affected agent(s).
   

This is the only place in CommunityWFM where you can find events deleted from a published schedule.

Extra credit

Explore the other Audit report options

• Application: Includes changes to agent profiles, collection points, the Enterprise Model, and many others.
• Auto Approve: Includes changes to the auto-approve rules. These apply to legacy and advanced vacation.
• PTO Application: Includes changes to advanced vacation features such as PTO policies, calendar partitions, and accrual schedules.
• Security: Includes changes made to security settings on any asset, and data subject rights requests and responses.