Yeah, just check which one is the primary, original listing, with a gazillion airports, and make the rest match.
All AFCAD files must have a country listing, and unlike aircraft (where making them Type 2 in the AIR file removes them fro the menu) you can't keep them from showing up. That's why the carrier flattens show up under the country "Carrier" - they have to show up somehow, so the writer called the country "Carrier.".
Whenever I have AFCADs that are used to shape the terrain, like carrier flattens, terraces, or other non-standard uses, I use the country name "Not An Airport" and the State or Province "Nowhere."