Sine NAV2017 Microsoft doesn't provide an "Delete Old Objects" codeunit in the upgrade toolkit nor does provide a list of tables which are obsolete. Only a list of deprecated and obsolete fields are provided. Microsoft has reused old object IDs multiple times. Simply keeping old obsolete tables in a database costs maintainance costs and burden in upgrades when Microsoft starts again reusing old tables ids.

Please provide at least a list of obsolete tables or even better provide again the "delete old objects" / "mark old objects" codeunit.