Seam Remoting is not calling callback methods when using Portal and portletbridge

Issue

• I have a SFSB that backs a modal panel. The panel operates as expected, except for the JS that controls whether or not to close the panel.  The JS callback function 'getDataErrorsCallback' is not called. The Seam Remoting debug shows that an existing session object cannot be injected for some reason. The cId on the request is correct but the response shown a new cId and there is the exception message that the session object isn't being injected.  

• getDataErrorsCallback not being executed in the following code

  <script>
       function getDataErrorsCallback(result) {
            alert("getDataErrorsCallback - " + result);
            Richfaces.hideModalPanel('modalSomeComponent');
            rerenderBasePageComponents();
       }
  </script>
  <!-- code inbetween-->
  <a4j:commandButton value="Some Button" event="onclick" action="#{someComponent.save}"
            oncomplete="Seam.Remoting.setDebug(true);  Seam.Remoting.getContext().setConversationId(#{conversation.id});Seam.Component.getInstance('someComponent').getDataErrors(getDataErrorsCallback);return
  false;"
            reRender="modalDivDisbursement"/>