Runway Start position ignored. SDK creates it's own

I am currently modifying a default airstrip. In the Delete section, I first checked all the boxes to delete all runways, starts, taxiways, holds, etc. When I zoom in on the World Map I see my 3 new Taxiway Parking spots and the 2 new Start positions. However, one of the Start positions is not where I put it. It wants to be approx. 100 yards down the runway instead. I’ve moved it, and even deleted it, but it remains locked in the wrong place. Why won’t the SDK let me fix this or at least just delete it?