Starting from Sentinel 7.4.4, the default retention period for event associations data is 14 days. If you are upgrading from a Sentinel version prior to 7.4.4, the retention period you had set for event associations data will be overridden to 14 days after the upgrade. To avoid this, you can set the retention period to a desired value by adding a property in the configuration.properties file. For more information, see Configuring the Retention Period for the Event Associations Data
in the Sentinel Administration Guide.