When you clear or assign alarm on primary or secondary NAS the alarms are not being synchronized between each other.
Any environment that you have more than one NAS with forward replication as bidirectional.
The nimid on the primary NAS is not the same as nimid on the secondary NAS.
Stop the NAS probe on the secondary HUB
Go to the "NAS" folder on the secondary HUB
Delete the database.db and transactionlog.db
Inside the NAS folder go to the "replication" folder and delete the queue.db
Start the NAS probe and check if the primary and secondary NAS has the same Alarm ID.