You are describing clients with an "Installment Receivables" requirement more than this circumstance. I agree that this would not be appropriate for a client where every invoice involves a payment plan. However, if the client is looking for offering extended terms on a single large invoice as the exception, rather than the rule, then this procedure works.

• The statement displays as you would want (the revenue has been booked in the month on the invoice).
• Applying cash is faster in faster in Adagio, and shouldn't be more complicate than usual.
• The issue of multiple invoices or changes in payment plans doesn't occur for this problem (but down for Installment Receivables).
  

I agree there is an opportunity for a 3rd party developer here.

BTW - If you change the procedure here and change the invoice date, instead of the terms and due date, your clients would be closer to a reasonable work-around if we allowed them to exclude post dated invoices from the statement. Also, the most recent release of Receivables allows them to change due dates on invoices.