I exported the dashboard and visualizations from old kibana system (version 6.3). And then I imported them to the new Kibana (version 7.6).
However, only a few of them are successfully imported. And many of them are missing.
Actually when I was importing the json file of the visualizations, I saw msg as below:
Support for JSON files is going away Use our updated export to generate NDJSON files, and you'll be all set.
What is NDJSON? My old kibana does not have it. I can only export those visualizations as JSON files.
Is it the reason that my old visualizations are missing in the new kibana system?