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Once reported, a debt collector is permitted to make monthly updates, even if no changes are included in the reporting.
It advises that they still have active collection authority on the debt.
Sure, they are most likely using it as a collection tactic rather than to advise others of their continued collection authority, but that does not make their reporting improper or inaccurate.
You may wish to offer the debt collector a PFD, thus obtaining their CR deletion in exchange for satisfaction of the debt.