This is a typical message for the Conflict Resolver functionality. During network outage there were changes to records in both databases: HQ and Agency.

Once network was back online SymmetricDS had to reconcile changes to same rows initiated in different databases.

Typically conflict resolution configuration settings are set to LATEST_WINS. This forces SymmetricDS to pick a losing change (older one in this case) and log a message.

If you are concerned about data integrity, you can re-load entire tables from HQ to Agency - to make sure they are in-sync goring forward.