For nested job chains <modify_hot_folder/> command on order creates an extra order

Current Situation

• A nested job chain "nested_chain" is configured with two job chains e.g., job_chain1, job_chain2
• An order is configured to start the nested job chain e.g. nested_chain,start.order.xml
• The order nested_chain,start.order.xml references a schedule, e.g. schedule1

  <?xml version="1.0" encoding="ISO-8859-1"?>
  <order  title="test" job_chain="nested_chain" id="start">
      <params />
      <run_time  schedule="schedule1"/>
  </order>
  

• If a user removes the schedule1 from the order using JOC Cockpit --> "Set Run-time" action menu and "Remove Schedule" operation then the order will be updated by a <modify_hot_folder> command. The following three behaviors are observed:
  1. a new order is created job_chain1,start.order.xml
  2. the order nested_chain,start.order.xml is not modified
  3. In the JOC Cockpit the order nested_chain,start.order.xml is visible but no "show configuration" option is available or when clicking the "Set Run-time" action then a JOC-420 error is thrown like this:

     JOC-400
     JobSchedulerBadRequestException: SCHEDULER-162 There is no order start in job chain "/support/Ticket#2018080910000015/test/nested_chain 

Desired Behavior

• Removing a schedule from an order for a nested job chain should not create an extra order and should be available from the JOC Cockpit.