| @Transactional | public boolean isManaged() | { | return getInstance()!=null && | getEntityManager().contains( getInstance() ); | } | getEntityManager().contains( getInstance() ) is returning false is the culprit. So I checked whether the EM has changed by looking at the hash code (is this a valid way of doing it?), and the hash codes remain constant throughout the conversation. As well, the (T) getComponentInstance( getPersitenceContextName() ) is only called once, which is expected, so it doesn't appear the EM is ever null. The getInstance() hasn't changed either--it's not null. Is there anywhere in Seam where em's cache is cleared either explicitly or implicitly? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055410#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...