Restoring a domain

[Pegasus2]

Every night I make a backup on my servers like this:
/usr/local/psa/bin/pleskbackup --server --output-file=/backupdir/backupfile.backup
Nothing goes wrong here.

But when I want to restore one domain from the backup, there will be an .xml file like:
"backup_domain.com_info_1012140001.xml" in the "server repository" of every domain on the server. No backups are scheduled for the domains btw.

To restore a domain I use:
/usr/local/psa/bin/pleskrestore --restore /backupdir/backupfile.backup -level domains -filter list:domain.com

Am I doing something wrong?

System: Linux centos5, Plesk 10