We try to help, when this is not welcome, no problem for me because all of this analyzes and testings are extremely time-consuming and I do nothing for myself - we do it for the community.
When you don´t add these “DeleteAirport” and someone else creates also the same airport you have the “double scenery” view. That´s exactly the case here.
We “create” these missing airport in the navdata-cycle (only the runway, nav points and procedures). Our package is very low and we disable the stock data completely. All addon-sceneries are higher in the priority as our data but when you don´t add these “DeleteAirport” you see the runways from our package and also from your package.
Richard