multiple url locations in sitemap

I have changed the url of some important pages within my website.

In order to maintain backward compatibility and to avoid breaking links which refer to those pages and already spreaded out, the original addresses are still alive. So there are two addresses to exactly same pages.

How should it be defined in a sitemap?

<urlset xmlns="http://ift.tt/xwbjRF">
   <url>
      <loc>http://ift.tt/2ksQuXi;
      <loc>http://ift.tt/2kQcrPu;
   </url>
   <url>
      <loc>http://ift.tt/2ksQqqw;
      <loc>http://ift.tt/2kQiRxO;
   </url>
</urlset> 

Is this right?