FSIMPORT HELP NEEDED

After successfully use of FSIMPORT I had to reinstall my system because of a faulty registry.On the new installed system the old backuped scenery is well imported again, but at the certain airports I have to move the runways I am not able to do it.FSIMPORT lets me move the runways, I save it and compile the scenery again - the runways are still at there old position.Is there a default key in the Fly.ini I changed by error ?Thanks in advance.Cord