All our sceneries, except Zurich, have runways made this way: there's a "naked" default runway, plus a custom detail texture that will give its specific look (so, no default numbers or markings). Runway lights are default.
This will allow not having any problems (in FSX) with FS9 AI models that disappears.
The FS9 version, being a port of the FSX one, is exactly the same.