I appreciate the discussion. There is some critical mass of knowledge you need to understand the persistence aspects of JBPM. Pulling a GraphSession out of a JbpmContext and calling "save()" could mean anything. Where does the transaction start and end? What gets rolled back when you when you call JbpmContext.setRollbackOnly()? Every API needs a contract, a set of documented rules that defines a model and how the model is affected. Reverse-engineering it from code is really unproductive except to clarify special cases. All us newcomers are in the same boat until the developers really document it. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046003#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...