Solved it by creating a 3rd custom field and a function to save either the ´customer_name´ or ´quick_customer_name´ to the new field. Then do a orderby on that third field.
Solved it by creating a 3rd custom field and a function to save either the ´customer_name´ or ´quick_customer_name´ to the new field. Then do a orderby on that third field.