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.
the "open dataset"-command opens a datafile within the given directory. if this file already exists, the system clears all content of this file. Is there any chance to avoid this situation?