I made a mistake during the development of my Drupal 8 site. Some time ago I changed the default language (to german) - but I continued to create the configuration entities (like fields and so on) in English.
Now I found out that this was not really smart - and I want to change the default language of all existing configuration entities.
First of all, I just tried to delete the german language - so Drupal 8 switches back to English as default. Now every new configuration entity (new field) is defined in English. That's fine. But every existing configuration entity shows "Unknown (de) (original)" as the default language. And when I open it to save it again nothing changes.
I took a look into the database considering to change it directly there - but unfortunately, the configuration is stored binary.
Is there any other way to solve this problem?