Keep Item Subscribers in template or duplicated board

I have a board, with a large number of items, that is used every month to house our month-end Accounting tasks and journal entries. Each month we update the board with any new items, and then duplicate as the starting point for the next month’s board. When we duplicate, the item level subscribers that we set up in the prior month fall off. Is there a way to keep item level subscribers when duplicating? I also just tried to set the board as a template to reuse, but see that the item level subscribers are also falling off using that method. FYI - I have an automation to notify subscribers when a dependent task is complete, so that they know when to move forward with related tasks. I’m trying to avoid manually setting up the same subscribers to the same tasks each month.