Refreshing Request Sent By Editing XML

Hi,

I was trying to edit a WS-Security header in a request using the XML view.  When I sent the request, the new value wasn't sent to the serever and going over to Raw showed the old value.  Is there a way to refresh the request from XML without recreating the request?  I had a bunch of other values in the XML payload.

I'm using ReadyAPI 1.5.0.

Thanks