Issue
Silenced/Ack alarms at one WS still beeps unack at second WS.
Going to WS2 and selecting one of the alarms in the Active Alarm Viewer causes the alarms in question to update correctly (silenced/ack)
ACCTrace shows WS2 receiving the ACK message from WS1
Environment
CyberStation
Cause
Corrupted subscription
Resolution
In the EventNotification object remove WS2 from the list of recipients then add it back.