Aria Operations 8.18.x
Aria Operations for Logs 8.18.x
By design if an generated alert is not cancelled in Aria Operations, the new alert received for the same event overwrites the existing alert text without changing the date the alert was originally generated.
Manually cancel the active alert in Aria Operations or configuring the Aria Operations for Logs alert to cancel the alert in VMware Aria Operations if it is not triggered within a certain period using the "Auto Cancel".
For additional information visit the documentation Add an Alert to Send Notifications to VMware Aria Operations .