How to extend classic web application into claims application

Hi,

I have SharePoint 2010 web application in classic mode(URL-http://servername:85) in default zone. I extended that web application(URL-http://servername:103) which also in classic mode in internet zone. I want to convert the authentication mode of my extended web application(URL-http://servername:103) into claims. i used the below powershell command to covert my extende web application into claims

$App = get-spwebapplication "http://servername:103"

$app.useclaimsauthentication = "True"

$app.Update()

Result was that both application is converted into claims. But i want that extended application only will be converted into claims. I expecting the result that default zone application is in classic mode and internet zone application is in claims mode. Is it possible? If yes, tell me the procedure.

Kanthavel