moving .Spam folder from one domain to another

[jg]

As root I did this:

cp -R .Spam /usr/local/vpopmail/domains/domain.com/user/Maildir

from the directory that contains the .Spam folder for another domain.

Will this work?  The directory I copied had over 5,000 spams in it, which I'd like to have available as a bayesian reference for the new domain.

thanks

John