A way to mark off old invoices so they’re not overdue

LOVE the new feature where it shows that invoices are overdue.

BUT I have a bunch of old invoices that paid in cash and I forgot to mark off. So I don’t want to go back to mark them as paid when some are like 2 years old. (Since it sends an email to the client)

I would love a way to silently mark off these old invoices so my books can be up to date!