Duplicate a board and reset statuses

Hi - I could not find a good answer on this but it seems like a common requirement so I hope I’m missing something easy! I’ve created a month-end board for accounting close items and I would like to duplicate the most recent board each month and clear the statuses. I do not want to create a template board, because the checklist is a living document and we add and reassign tasks fairly regularly. I am fine manually duplicating the board once the previous month is finished, but I do not see a way to bulk update columns. I can duplicate the column with no values and then delete the original, but that seems clunky. Am I missing something obvious here?