Paste MS-Word content into Xinha disappears after save

Find attached a .doc file.
When I copy then paste its content into quickstart > articles > myarticle, and then save it, it all goes away.

• open the attached file
• copy its content into the clipboard
• edit a document of the type Article
• paste the content from the clipboard into the Body section
  Here, you notice that the content appears
• save the changes made to the document
  Here, you notice that the content has disappeared.