create a package - folder under the Package Manager tab
add a package Name and click ‘Create Package’
this will create a folder under core/components
edit your config and add this name under the tab MIGXdb-settings
right-click your config and click export to package
Then you can copy that package - folder to your new installation or create a transport-package, which you can install on the new installation and click import from package to import the config into the new installation.
You could also just export the whole config as json by right-click into the config and do export/import.
Copy the whole json-string and paste it into an empty config on your new installation.
I was missing the step “edit your config and add this name under the tab MIGXdb-settings”. Whenever I tried to export the config to a package, nothing would happen.
Now we can copy the package to our other sites and then refer to the migx config in the tv config as config_name:package_name. Nice!