I noticed all of their policy model databases were loaded using 'sepmd -p'.
<Please see attached file for image>

I then ran a 'sepmd -L DMS__' to see the subscribers and noticed that there was none.
To resolve the issue, I resubscribed the DMS to the ActiveMQ and the DH:
# sepmd -smq DMS__ -predefined ServerToServerBroadcast -destination DH
Then, I synchronized all policy models to the DMS__.
# dmsmgr -sync self
<Please see attached file for image>

To verify that the DH__ and the DMS__ were both synchronized, I validated below:
<Please see attached file for image>