RETRY handlingStrategy should handle exception multiple times while handling exception via subprocess

I have a case where customer is trying to handle exception of WorkIteamHandler(RESTWorkItemHandler) by defining "handlingProcessId" and "handlingStrategy", like as:

~~~
new org.jbpm.process.workitem.rest.RESTWorkItemHandler("bpmsAdmin","admin1",classLoader, "DealWithException","RETRY")
~~~
This approach works fine when we use 'COMPLETE' and 'ABORT' handlingStrategy. With 'RETRY' strategy I am expecting when exception occurs subprocess handle it and after completion of subprocess 'Rest' service task will be triggered agaig and new suprocess will be started to handle the "new" exception. But actually subprocess is called only once and on 2nd attempt Rest task throws exception.