you probably want to use merge instead of persist, but it's hard to tell what your code is doing. maybe post a more clear example. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4116045#4116045 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4116045