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.
My understanding is that you cannot use MDM for Finance master data like GL accounts or Cost Centers. Why ? And is there a best practice for centrally maintaining these kinds of master data if MDM cannot be used ?