Description of problem: 

when importing dialog the import is ignoring the dialog_field_responders values in the dialog export yaml file. 


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. export 4.5 dialog with auto-refresh fields
2. set dialog_field_responders in yaml
3. import dialog on 4.6 system 

Actual results: Only new responders should be used if dialog has both auto_refresh (old) and dialog_field_responders (new)


Expected results: Dialog is creating associations for both old and new, resulting in dups and also mismatched behavior if the field associations had differing behavior. 


Additional info: