Good afternoon,
It appears that after installing the Orion Log Viewer during a 2017.X -> 2020.2.5 upgrade earlier this month, there's been a change to the way Syslog messages are forwarded. OR, I just don't know how to find the setting I'm looking for 
Prior to the upgrade (and installation of the OLV plugin), the forwarded syslogs from the legacy Syslog Viewer contained an "Original address = X.X.X.X". SInce the upgrade, and setting up the same forwarding rules in OLV, this piece of info is missing. Is this expected behavior? Our SIEM team was inquiring about it, since they now need to adjust their parsing rules to handle the change.