Yes that is the scenario. But on our end the date in the footer changes along with the report date.
We can live with an odd report date now and then

Mostly posted this query to the forum out of curiosity and to be sure that it wasn't indicative of a potential integrity error. The data is going to the correct periods when posted, the reports are mostly for internal use and the dates affected are only the header on the report and the footer in the Ledger, from our perspective this is not an issue that warrants an overhaul of every Adagio report

Just glad to have an explanation. Thanks for investigating and responding.