Issue with saving Orbeon Forms when using SSO protected url.

Hi,

 We are having issues while saving Orbeon Form. Url which we are trying to hit while save is SSO protected. and SSO authentication is failing. We are using siteminder to authenticate.

  We have App1 and /Orbeon ear in weblogic app server.  App1 gets the oxf.xforms.renderer.document
and some prepop data and forward this request to /Orbeon ear. While rendering we dont have issues and we are able to see user id in request header.  At the time of save we use xforms:submission <url>/App1/SaveServlet. Request goes to /Orbeon/xforms-server-submit after that we dont see request going to this servlet.  SSO stops this request and waits for authentication.

Can anyone help in this regard.

Thanks,
Alok Prakash