When a customer has a different bill-to, and for a dimension they have different values, the dimension value from the bill-to will always be copied to the sales order.

It would be better to have a dimension setup, like dimension priorities, to define from which customer the dimensions should be copied.

Example:

Customer A has value 'south' for dimension AREA.

Customer B has value 'north' for dimension AREA.

A sales order is created where customer A is the sell-to and customer B is the bill-to.

This order is sold to and will be delivered to customer A in the south, but the AREA dimension will indicate that the revenue (G/L) is set in the north. This is not correct.