Yes that's the obvious part. But what I was trying to figure out is the "logging level". I wasn't sure if the logging level that is defined under "Server Manager" > "Log Configuration" also applies to the "Syslog Targets". It looks like both are related.
If configure a "Syslog Target" but I leave my "server manager > log config" unconfigured... Then nothing gets sent to the "syslog target".
I then configure both and I leave the "system levels" at default (WARN) then my syslog target does get any session logs that match my export filter. Regardless of what system levels I configure under server manager. Which is what I had expected.
It just takes a little more time for the export filter stuff to get sent out versus the normal syslog stuff.
Sorry for the confusion. I am still getting used to the nuaces...