It should be possible to export a workflow without selecting the top-level folder

Current Situation:  

• When exporting workflows not selecting the top-level folder but some later folder in the folder hierarchy then in the export popup window throws the error “Http failure response for http://localhost:5556/joc/api/inventory/export: 420 OK " message.  

How to Reproduce

• login to the JOC Cockpit GUI.
• Move to the Configuration view.
• Click the Export Button.  
• Expand all workflows and select any of them.
• Uncheck the top-level folder and click the Submit button.  
• The error will be displayed on the screen.

Desired Behavior

• It should be possible to export workflows without selecting the top-level folder