Vista - why Vista Backup utility dont make backup of aspx files?

1.- Hello, I'm a web developer, and for me is very important to make backups
of aspx files. I noticed that the Vista Backup utility dont make backup of
that file types (I proved it restoring a whole directory). Why this happens?

2.- There are some option to configure what file types to make backup and
what file types not to make backup? could choose it the administrator?

Thanks.
Berny

I would like to bring this up also.

I have recently had to reinstall Vista and have restored my data from a backup made using the Vista backup utility.

I have just checked and none of my .aspx pages in various web sites have been restored.

This is VERY serious issue as I have potentially lost all my web sites. All of my aspx.vb files have been restored, just no .aspx documents.

Thanks,

BF