[K12OSN] copying mail, but keeping new Evolution/spamassassin settings?

[ssanders at coin.org]

hi all, i did a 4.2.1 fresh install, then FTPed /home directories over,
as well as /etc/groups (i had recreated the users on the new install).
on the fresh install, spamassassin was working agressively, ready to be
taught.  the old /home directories had a very old, manually
installed/configured spamassassin, long before K12OSN.  it had not been
working very well, hence the desire to have a fresh install.

i did not overwrite .spamassassin, in an effort to keep the new stuff
there. however, it is not flagging stuff agressively as it was. any
suggestions?