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.
In upgrading BPC 7.0 to 7.5, do I need to uninstall all the pre-requisites software for the .NET server like the MSXML, .NET, IIS? I'm done on uninstalling the BPC CLient NW and BPC Server NW.