From a view we can export to a long and detailed json file, no problem. But there is no way to import that file again.
I tried https://backdropcms.org/project/default_views_config but it barfed on the exported file with:
ParseError: syntax error, unexpected token ":" in default_views_config_form_validate() (line 2 of /var/www/clients/client1/web1/web/modules/default_views_config/default_views_config.module(83) : eval()'d code).
Or is there another way to import the views?
Yes. All configurations (including Views) can be imported at
admin/config/development/configuration/single
Also the module default_views_config() is used to convert Drupal 7 Views exports (basically PHP code) into JSON, which you can then copy and import in the link above.