Umberto in response to your question - NO. On this computer the only installation has been FSX-SE. Many of my add-on programs, your airports and others, were reinstalled on the new setup with FSX-SE. Yesterday after posting my original question, I flew a simulation from KSTL to KIAH and everything seems to be working with regards to GSX de-boarding and the jetway function in GSX at KIAH.
Paul K
KGYR