Hello Umberto,
Thank you for your reply. It just turned to be that MegaScenryEearth-Florida was responsible for not letting the whole KFLL scenery to properly load and show. I experimented with the KFLL location in the scenery library and discovered that if I put it on top of MegaSceneryEarth in the scenery library hiarchy, the problem I had would disappear completely. Once I moved KFLL up, everything showed up the way it should, buildings, parked vehicles, etc.
I am sorry I pushed the panic button to soon. I should have experimented a bit more before bothering this forum with such simple problem to solve.
Again, thank you for your help.
R. George Balzaretti