Hi,
In that case, the only option you have is to give a deaf year to Mustafa on all he says. He has totally neglected all problems related to backups and restore in comparision to all other fantastic work he did, and does further.
The only, and the best, option is to install kloxomr on a new server, create all domains on the new server, make all email boxes - and only then - bring all directory, by tar and untar method, to appropriate locations on the new server.
For this you should get mysql, email and html dirs from the old to new. To be able to bring them in their appropriate locations from old to new, you must recontruct kloxo-mr the same as kloxo locations.
Other than this, you may have small chance to make backup from old kloxo and restore it on new kloxomr.
If this does not work within ten minutes, you may choose to listen to Mustafa and waste your time for days, or listen to my advice to reconstruct kloxomr on the new server in an hour.