Originally Posted by thibotus01
Absoluetly not. I only change the backup folder exactly where you said... you should check your script maybe
I just tested it on my server. Changing the backup folder does not change the apps vhost but changing the website basedir instead of the backup directory has exactly the effect that you described. So on your server, the website basdir setting has been changed to /home/backup and not the backup directory.
So to fix your setup, follow the instructions that I posted above and set the website bsedir back to /var/www and then change the backup directory to /home/backup.