Intercompany Supplier is imported without Address Name and has duplicate Addresses

Summary:

We have defined an Internal Customer and created a Supplier for this Customer using the Supplier Import FBDI and populating the Registry ID of the Customer.

The Supplier Profile and Supplier Address were created based on the Customer details.

The Address Name was not populated and 2 Addresses were created for the Supplier even though only 1 Site is defined for the Customer.

How can we get the Address Name to populate?

Why are duplicate Addresses created. Are both required?

How can we use the Supplier Address Import FBDI to populate the rest of the Address details if the Address Name is missing?