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My PROCESSINSTANCEINFO always stays empty and therefore alsoin task table the processInstanceId=-1.

Why is it empy?

My persistence.xml

<persistence-unit name="org.drools.task">


                    <provider>org.hibernate.ejb.HibernatePersistence</provider>


                    <class>org.jbpm.task.Attachment</class>


                    <class>org.jbpm.task.Content</class>


                    <class>org.jbpm.task.BooleanExpression</class>


                    <class>org.jbpm.task.Comment</class>


                    <class>org.jbpm.task.Deadline</class>


                    <class>org.jbpm.task.Delegation</class>


                    <class>org.jbpm.task.Escalation</class>


                    <class>org.jbpm.task.Group</class>


                    <class>org.jbpm.task.I18NText</class>


                    <class>org.jbpm.task.Notification</class>


                    <class>org.jbpm.task.EmailNotification</class>


                    <class>org.jbpm.task.EmailNotificationHeader</class>


                    <class>org.jbpm.task.PeopleAssignments</class>


                    <class>org.jbpm.task.Reassignment</class>


                    <class>org.jbpm.task.Status</class>


                    <class>org.jbpm.task.Task</class>


                    <class>org.jbpm.task.TaskData</class>


                    <class>org.jbpm.task.SubTasksStrategy</class>


                    <class>org.jbpm.task.OnParentAbortAllSubTasksEndStrategy</class>


                    <class>org.jbpm.task.OnAllSubTasksEndParentEndStrategy</class>


                    <class>org.jbpm.task.User</class>


                    <class>org.drools.persistence.session.SessionInfo</class>
                    <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class>
                    <class>org.jbpm.persistence.processinstance.ProcessInstanceEventInfo</class>
                    <class>org.drools.persistence.processinstance.WorkItemInfo</class>
                    <exclude-unlisted-classes>true</exclude-unlisted-classes>
                    <properties>

Thanks!!