flow.xml.gz > flow.json.gz migration

[Gregory M. Foreman]

Hello:

My client upgraded to Nifi 1.16.1.  With the original flow.xml.gz and 
autogenerated flow.json.gz in place everything works fine.  When 
nifi.flow.configuration.json.file is set to the json file location and the 
original nifi.flow.configuration.file is commented out and flow.xml.gz removed, 
the server will not start.  Is there any migration guidance for moving from 
flow.xml.gz to flow.json.gz?

Thanks,
Greg