Quarantined files are not deleted after you change the Quarantine Manager Policy to an early date.

NOTE: The default Quarantine Manager Policy states: Automatically delete quarantined data after the specified number of days, 28 days.

If a Quarantine folder already contains multiple files, and the number of days is changed from the default (28 days) to lower number of days (for example 2 days), any files that were present in the client quarantine folder before the change are not deleted. Only newly quarantined files that meet the new policy condition (2 days) are deleted.