Hi again,
just to inform all here - we had a short conversation about your scenery (RPUO), the area looks amazing 
You have done all right. The “DeleteAirport” attributes are set correctly, but the order in the content.xml file was wrong. Your scenery package was above our package, which show you the double runways.
There are two very important steps:
- that you use the latest “Navigraph Navdata client” (at least beta 16 or above)
- that you remove and install the dataset because only due this flow, you can be sure, that our package is high enough to overwrite the default data, but low enough that addon sceneries can overwrite our data
Hope that helps!
Cheers,
Richard