KIAH contains the same data as the default scenery. I couldn't find any previous message of yours about suggesting a change (tried searching with "ils" in the KIAH section, assuming you posted it there).
It's best to report what you consider errors in an easy to find way (in the proper section and with a proper subject), rather than fix them yourself, risking losing all your changes when we'll eventually update the scenery. Now that you reported it, we'll have a look at it.