Can the license keys I got from the License Key Center work with the keys I got from IBM before May, 2006?
The License Key Center gives you much more traceability and asset management capabilities than the legacy Rational licensing applications. To maximize your potential for managing your license keys within your environment, you should cease using the license keys you obtained prior to May, 2006, and get them again through the License Key Center. Additionally, we encourage you to revisit your Rational license key deployment strategy across your environment and make sure your keys are deployed in a way that makes sense for you.
