You need to print/purge the 'Unposting journal', not the standard Current/Next Year Batch posting journals.
The menu choice is Post -> Print Posting Journals -> Print Unpost Journal.
The print screen will have 'Unpost' as the journal type, and the sequence number to print/purge.

Adagio Ledger 9.1A will have a bold message on the screen that 'There is no posting journal to print' if there is no data file or if no posting journal is expected to be there.