I haven't found anything on this, so I think the only solution is to export/import.
However, when I export using CSV and then import, none of the statuses or people are transferred, even though it's the same schema. I just want to make a backup, but if all the non-text-based stuff is missing, it's useless to me.
So how can I tell the importer that, for example, the status “Active” is not a number but a bubble?
For example, the status “Active” becomes ‘62’ after import, or in the case of people, “Max Mustermann” becomes “80.” This is probably because they are objects, but how can I import them then?