You always recommend this plugin for import : https://wordpress.org/plugins/wp-ultimate-csv-importer/
But the free version doesn't support CPT and custom fields created by Meta Box.
I tested with WP all import and succeeded for once, and then failed. Is there any documentation on how to map the custom created table and custom fields (even simple fields)?
I tried to generate php code of the field group but failed too, many times.
What should I check?
If there's no way to resolve the problem and no documentation that I can rely on, I'll have to abandon Meta Box AIO and go to ACF free for a quick fix.
p.s. I'm using Oxygen builder