Hi again,
Don't know if I missunderstand you. Today I have configured my security header in the "Security Configurations" (TimeStamp, Signature). To activate this security header I open the request and select "Aut" tab and press the "outgoing WSS" button where I can select my security configuration. I also select the "WS-A" tab and select the checkbutton (Enable WS-A addressing).
If I understan you correct I should remove all above and intead create my own security header. That is no problem, I have examples of headers so I can just copy and paste them. But I do not know where I can add not find where I can add this security header in soapUI.
PS! We have bought IBM Rational Soa Tester for $$$$ and it can not handle SAML2.0 either. So I have requested a soapUIpro license now. A looked at your video and I think we can do the same performance tests with this tool so maybe we can kick out IBM now. :-)