Just so that I'm clear, in the formatted address block, you'd want the order to be:
- Customer Name 1
- Customer Name 2
- Address line 1
- Address line 2
- City, State ZIP
- Country
and for the fields to move "up" the list if any individual entry is blank?
(Clarification: The concatenated customer name option is planned for the coming upgrade to Adagio Receivables, but I'd expect to see it in the next Service Pack for Invoices and OrderEntry.)