Obviously I did something wrong. – I have a database for my ancient emails. But there are two kinds of groups. As you can see in the screenshot I have a group »E-Mails« and a group »Archive«.
Import will import a mailbox or messages into the current group of the current database.
Archive Mailbox will always create a special folder in the root of the current database called Email. All emails archived this way will always go to this group structure, no matter where you are in that database.
Ah. Thank you for this explanation. So, obviously, I’ve used the archive function although I did not had understood their functionality. Annoying.
All the more thanks for your support!
Now, is there afterwards a way to restore the original structure of the mailbox and its content from the archive in order to import the so restored emails subsequently into a ordinary group of the database?