There are no automatic upgrade options for previous versions of IBM® Rational® Change. Instead, you must install the software into a new directory. Then, apply any previous customizations to the new installation.
Upgrading from a stand-alone server to a central server
To upgrade to a central server, install a new copy of IBM Rational Change. If you continue to run your previous server in stand-alone mode, remove any databases from that server before adding them to your central server.