Dear forum users,
I regret to inform you that part of the forum history has been lost because of a backup mistake. When migrating this website to a new hosting provider, the database backups seemed all fine, as there was a long list of daily backups. However, during a previous upgrade of the forum software, a new database name had been used - and the backup procedure was accidentally not adjusted. So the backups were of the old database that was not anymore used, so when the website was migrated and the backup was used to recreate the database, a 2018 version of the database was put back. Sadly enough there were no newer backups of the correct database anymore. My sincere apologies.