I have a browser based infopath form which lists data from an external data source(web service) in this case. I have configured the display names and value properties of the dropdown but when the form is opened in the browser and when i select a display name its corresponding value gets displayed in the dropdown(display name is listed again).. when i click on another display name the behaviour is perfect. This is strange as previously the form was working fine(Now also in client preview).What causes this behaviour