Multiple Sage members have requested this feature over the years. IDK why it's not something Sage moved on?
Flagging past due accounts is a necessary feature IMO. While AR is trying to get in past due payments, the Operations group is still fulfilling customer orders. We use the Sage feature of generating Memorized Sales Invoices for future transactions as our sales recur on a weekly, biweekly or monthly basis (house cleaning). So if AR can flag an account as past due, it would be super helpful to see that in the sales invoice list or the preview screen to print sales invoices and work orders. Operations can see that the customer is past due and not fulfil the work until the account is released.
Many thanks for taking the suggestion!