Honestly that one looked incomplete and artificial with an evenly placed Elevated Square Area in the middle of nowhere with some of it outside the Buildable Area so you couldn't fix it either. I'm guessing that Version of the Map was never intended to be released.
The good thing about the Sculpted Version of this Skirt is you can actually Terraform the Stylized Area and make the Map flat. Textures look like it's outside the Buildable Area but actually it is inside. Maybe you could use this as a Workaround. But I still think we need Flat 1, Flat 2, Sculpted 1, Sculpted 2, etc. options in the Dropdowns for every Continent and Biome to give us more variety. However, they should fix the Elevated Square Area in the Flat Version of the Carpathians Map if it gets added as an option. That Artefact made it unusable for me. It is most noticeable when zoomed out.