If so, you need SAP Universal ID. In a few months, SAP Universal ID will be the only option to login to SAP Community. Without it, you will lose your content and badges. If you have multiple accounts, use the Consolidation Tool to merge your content.
I will be migrating a client from Performance Manager to SSM. I understand the capabilities of SSM but have never used Performance Manager. Is these material that compares the two, or even a good description of Performace Manager.