Override equals() and hashCode() in your entity. Deja vú... (if it solves the issue, that is) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120213#4120213 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4120213