title: Transform config in asp.net mvc isnt updated
body: <p>I have asp.net mvc 4 project where try to use transform config, where have some default values and when I try to change to release mode some default values change to release values, but it isnt work. When I try to change to release mode and build application I have nothing changes. Here is my default values in Web.config:</p>
  
  <pre><code>&lt;appSettings&gt;
      &lt;add key="appId" value="####"/&gt;
      &lt;add key="appSecret" value="####"/&gt;
      &lt;add key="hostName" value="####"/&gt;
    &lt;/appSettings&gt;
  </code></pre>
  
  <p>And here is what I have in my Web.Release.config:</p>
  
  <pre><code>&lt;configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform"&gt;
  
    &lt;appSettings&gt;
      &lt;add key="appId" value="!!!!" xdt:Transform="Replace" xdt:Locator="Match(name)" /&gt;
      &lt;add key="appSecret" value="!!!!" xdt:Transform="Replace" xdt:Locator="Match(name)"/&gt;
      &lt;add key="hostName" value="!!!!" xdt:Transform="Replace" xdt:Locator="Match(name)"/&gt;
    &lt;/appSettings&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>Does anybody help me?</p>