12.2.3 Bill To Address Charges Line - related customer

From manual:

The billing address for the customer invoice is defaulted from the service request

Bill To address (displayed in the Contact Center's Contacts/Addresses tab). If you

want to modify the billing address then, select the Bill To subtab.

Create two customer with a relation.

Relation is added from Contact Center tab.

Create a Service Reqeust, with several charges lines. 

Change the bill party/account charges for some of the charges lines

and submit to Order Managment. Two order are created.

The related address (bill to) is not copied into the order?