In an open account case, the customer contact details are captured.

In an open account case, the customer contact details are captured. The customer can provide several addresses, which are stored in the page group .Addresses. One of the addresses is the primary address used for correspondence with the customer. To easily identify the primary address, you add a .PrimaryAddress page property in the case type.

How do you link .PrimaryAddress to the relevant entry in .Addresses without duplicating data on the clipboard?