Jeff,
Sorry that this answer took some time.
I tried to debug it as you said, but nothing comes up in the log.
I configured the logging part in the service-config.xml as followed :
<logging>
<target class="flex.messaging.log.ConsoleTarget"
level="Debug">
<properties>
<prefix>[Flex] </prefix>
<includeDate>true</includeDate>
<includeTime>true</includeTime>
<includeLevel>true</includeLevel>
<includeCategory>true</includeCategory>
</properties>
<filters>
<pattern>DataService.*</pattern>
<pattern>Message.*</pattern>
<pattern>Endpoint.*</pattern>
<pattern>Service.*</pattern>
<pattern>Configuration</pattern>
</filters>
</target>
</logging>
