The contact listed on the Finance page should be the default to receive invoices

Right now, any older opportunity that is approved and turned into a S/O or project may have old contact details for finance. Invoices then are delivered to that contact regardless of who is listed on the finance page. This is so silly, a client may have multiple parent agreements. The finance page contact should be the default, overriding all else unless specifically designated. Like, make the agreement default to leave the finance contact blank, it can be filled in if a client for some reason wants one agreement billed separately. This has caused so much trouble with our clients, it's very frustrating.