Moving ILS with Afcad 2 not always working ?

Hello everybody,I thought about using my London Airports in Fs2004.From 2 airporrts I found the nav bgl's and deleted them.From Heathrow I could not find any ILS in the bgl files ( checked with a bgl decompile utility ) so I assumed it used the default ILS.I moved the position from the default ILS , but when loading the scenery no difference could be seen.Any ideas what has to be done to make it work.The Afcad 2 file I saved in teh London Airports folder.Thanks for any help.