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.
Is it advisable to assign "Business Area" to all "Cost Center". If so, then it will allow us to post the cost only to that particular business area which is mentioned in Cost Center.