AX 2012 web service question

I created a web service in AX.  I added a few methods.  If I change the code in any of these methods and then redeploy the service group and in VS 2010 if I right-click on the service reference and click Update", then the changes are available in my .Net project.

But if I add a new method to my class in AX and then follow the above steps, I do not see the new method in VS 2010.  So how do I add a new method to my web service and then get it to show up in my VS 2010 web site project?