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.
Can u pls give details related to Lead transfer from SMC to C4C? As you know there is a Lead Transfer app in SMC. What are the details that are passed to C4C?