Where did you get this “new” KHOU scenery? Who is the developer? The stock Hobby airport has runway 18/36, which of course was closed years ago. I’ve been working on a modified Hobby for months, off and on, but there is just so much wrong with the stock airport that I’ve lost sight of how long this will take me LOL. Back to your point, who is the developer and why not contact them instead of posting here?
According to latest Jep charts and Google Earth, most of the old 18/36 has been demolished and removed and is not an active taxiway.