Can anybody confirm the current state of the world with this issue please? The above seems to indicate that you can deploy EJB 2 and EJB 3 in the same EAR file (got that working), and even talk to each other through Session Beans. But what I really want to confirm is whether CMR between EJB 2 / EJB3 entity beans is at all possible? (to allow a gradual incremental update of EJB2 to EJB3 without doing a big bang conversion of the whole lot). Bill Burkes comment implies this is not possible but the post is getting on for 2 years old now! Many thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4076936#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...