When a watch event is set in ITAM to send a notification when a field has not changed in a set amount of time; the notification should keep going out until the event is satisfied. Say you have a have a watch event set on Status field to notify you if the status does not change from Shipped in 30 days. If the status does not change after 30 days, a notification goes out. If the status never changes, no additional notification will ever be sent out.
Notifications need to keep being sent until the Watch event is satisfied.