Hi, Miro.
This changeset is going to be reverted.
Please, before making this kind of changes, contact the local communities to discuss, instead of changing things with out understanding what you're doing. 
Autonomous regions are not the same thing as districts, as the name implies and as the Portuguese law mandates.
Please, refer to the wiki about this matter: 
https://wiki.openstreetmap.org/wiki/Portugal/Divis%C3%B5es_Administrativas

Regards,
António Madeira.