title: Does a web.config substitute app.config?
body: <p>I wrote a dll project in c#. I added a service reference. A app.config was automatically generated.
  In the same solution I have an asp.net project. </p>
  
  <p>If I copy paste the relevant configuration from the app.config to the web.config and change the client url - will it override the service url in the app.config?</p>
  
  <p>The funny thing is that everything works OK even without copying this section to the web.config. How come?</p>
  
  <p>TIA</p>