title: Why my Jena modified ontology isn't working properly on protege 2000?
body: <p>I initially created an ontology using Protege 2000. Than with Apache Jena java framework, i modified its content. however, when i open this modified version in Protege 2000, all my individual properties asserstions can't be found even if by checking the file's content in a text editor, these assertions exist.<br/></p>
  
  <blockquote>
    <p>PS:<br/>
    - All the work is XML/RDF.<br/>
    - Even if the file is just saved (without being modified) i have the same result.</p>
  </blockquote>
  
  <p>does anyone have any clue about this issue? is there a solution ?</p>