You can now import and export customer address book records via CSV

Billing and delivery fields are no longer stored separately in the database. All addresses are stored as equal address book records, and the customer profile only stores the default address book selections. When an order is placed, the selected addresses are copied into the order record.

In the Admin Dashboard, open a customer and use CSV Export Addresses or CSV Import Addresses on the customer page. More details are available in the AI Commerce Cloud HelpJuice documentation.