Environment: Inside one JVM (JBoss AS 4.0.5 w/EJB3) If a managed entity instance is held by thread A and thread B makes and saves changes to another managed instance will those changes be visible the next time thread A accesses its copy? If answer is 'no' one might ask why not do a merge in thread A to get latest copy? Answer: in my case I have many transient properties and they get lost if I use the new object returned from the merge. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4124939#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...