Hey Demain, This is what am doing.
1) Launching the process with a new StatefulKnowledgeSession.
2) Calling ksession.dispose after launching the process.
3) Claiming the Task for a user
4) Restarting my Human Task Server.
5) ksession.dispose() method do not make the session as "null". I could see that ksession is still available during Completing the Task.
6) When I Complete the Tasks gets Completed but the Workflow does not move forward.