I need to recreate the CA object and will do the PKIDIAG & SDIDIAG on the
iPrint server and then reboot. Do I have to do anything else for iPrint? I
don't think I use SSL for iPrint but don't know how to confirm.

The ipp.conf does the the lines saying:

Listen 631
NWSSLUpgradeable 631 "SSL CertificateDNS"