Anybody understand the struct/control virutal domain directory in vpopmail?

Hi everybody

Anybody understand the struct of directory of vpopmail?

Because I make a new qmail+vpopmail server and a I transfer all data of
the older to newer server.
==
1. copy the /home/vpopmail/domains
2. replace vpopmail database in mysql
3. copy the /var/qmail/control
4. copy the /var/qmail/users and modify (if necessary) the uid/gid the
line of file
5. replace horde database in mysql (in my case)
==

When I have more than 100 virtual domains, the new domains that I
create now should be in the:
/home/vpopmail/domains/0/newvirutaldomain.com
but its create in:
/home/vpopmail/domains/newvirutaldomain.com

I have fear that in the future some problem happens...

Anybody can help-me?

[]s