title: ckeditor generated code W3C validation : there is no attribute "data-cke-saved-src"
body: <p>I am working with <a href="http://ckeditor.com/blog/CKEditor-4.0.1.1-Released" rel="nofollow">CKEditor 4.0.1.1</a> in an intranet and try to validate my code with W3C markup validation service.</p>
  
  <p>The validation markup service find this error :</p>
  
  <blockquote>
    <p>Error Line 547, Column 2455: <strong>there is no attribute "data-cke-saved-src"</strong></p>
  </blockquote>
  
  <pre><code>&lt;img alt="" data-cke-saved-src="http://portail-rep/Contents/images/Java…
  </code></pre>
  
  <p>How can i disable this functionnality of ckeditor protecting code to make my code ok for W3C validation ?</p>