To use the new capabilities in CDS for Apps, existing users on the previous version of Common Data Service can upgrade to the latest CDS for Apps using one of the following options: Upgrade your previous version of CDS to CDS for Apps. Delete your previous version CDS database, then create a new CDS for Apps database in the existing environment. Do nothing
Did you choose the 2nd option and didn't delete your previous version Common Data Service database? If you don't have any important data in the previous version CDS database, you can simply delete it and then add a new CDS for Apps database.