Hello Aleksandar,

boundary=administrative only belongs to administrative boundaries. It is irritating when an admin_level is displayed in the editor, especially when there are many loaded relations. Otherwise the next person will come along and think “historic” is wrong. With historical boundaries there is no hierarchy that would justify an admin_level (with this tag/value).

The wiki page writes: "was:boundary=administrative" or "disused:boundary=administrative". That would be an option. But I think upon reactivation someone can take the admin_level from the relation history. I don't think it's a good idea to carry on all the old information and create confusion through the variety of tags. There are already many errors through which relations take on a different meaning and become unusable for their actual purpose.

Best regards,
Mario