Why are my airports getting deleted?! Help!

[ScottyB]

Hi,

I now have AFCAD 2.21. I have created a few airports such as Takaka, Motueka, Hanmer Springs etc. But I went in to FS9 just then to take of from the stock Wanaka airport, but it isn't there!! Where has it gone? And why?

Thanks, ScottyB.