Using Reply option with manually entered cc

We just upgrade to Rt 3.87 on 4/6/2010 and it is really going well.

A problem has been brought to my attention that I cannot verify was
there prior to the upgrade

When someone does a Reply from within the ticket, or reply to the ticket
from their email client, the email to someone added manually as a cc is
not being sent, recorded, etc.

Is this in the config options perhaps and I am just missing it.

Thanks in advance