global list converting to per-domain list

[Dave]

Hello,
    A MailScanner setup had global spam whitelist and blacklist rules files. 
I added per-domain whitelist and blacklist capabilities, now i'd like to 
take what was the original global files and make them in to the new default 
files that go in the spam.bydomain blacklist and whitelist areas. Do i just 
remove the from: and the yes and leave the email address? Is that all that 
is required or do i have to do something else?
Thanks.
Dave.