Why cant I see my projects mxml file within my src project dir

Hi,

For some, not so apparent reason, my projects build xmxl file cannot be seen in the src dir in my project.

You can see it sitting there all happy if you navigate to the src file via windows.

In fact if you copy ANY xmxl file into the src dir, the vanish from view.

Does anyone know why this happens. Its a little off if you ask me.

Thanks in advance.

Daz