To delete snapshots for replica sets and sharded clusters, use the Cloud Manager console to find then select a backup snapshot to delete.
Important
Affects next backup and point-in-time restores
If you delete the latest snapshot, the next backup job runs as a full backup instead of an incremental backup.
Point-in-time restores apply oplog entries to the last snapshot taken before the specified point. Deleting a snapshot removes the base snapshot for a PIT restore.
Procedure
In MongoDB Cloud Manager, go to the Continuous Backup page for your project.
If it is not already displayed, select the organization that contains your desired project from the Organizations menu in the navigation bar.
If it's not already displayed, select your desired project from the Projects menu in the navigation bar.
In the sidebar, click Continuous Backup under the Database heading.
The Continuous Backup page displays.