title: When I publish, the content of connectionStrings in Web.Release.config is not copied
body: <p>I have a connectionString in <code>Web.Debug.config</code>, and another one, different, in <code>Web.Release.config</code>.</p>
  
  <p>When I publish my project, the content of <code>Web.Release.config</code> does not appear in the <code>Web.config</code> published. Why?</p>
  
  <p><strong>Web.config</strong></p>
  
  <pre><code>&lt;configuration&gt;
      &lt;connectionStrings&gt;
          &lt;!-- &lt;add name="DefaultConnection" providerName="System.Data.SqlClient" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-SalvaVidas-20130610104655;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-SalvaVidas-20130610104655.mdf" /&gt; --&gt;
      &lt;/connectionStrings&gt;
  </code></pre>
  
  <p><strong>Web.Debug.config</strong></p>
  
  <pre><code>&lt;configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform"&gt;
      &lt;connectionStrings&gt;
          &lt;add name="MyContext"
               providerName="System.Data.SqlClient"
               connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=MyDb;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\MyDb.mdf" /&gt;
      &lt;/connectionStrings&gt;
  </code></pre>
  
  <p><strong>Web.Release.config</strong></p>
  
  <pre><code>&lt;configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform"&gt;
      &lt;connectionStrings&gt;
          &lt;add name="MyContext"
               providerName="System.Data.SqlClient"
               connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=MyDb;Server=ServerName;Database=MyDb;Trusted_Connection=True;Integrated Security=SSPI;" /&gt;
      &lt;/connectionStrings&gt;
  </code></pre>