Just stumbled upon the
quote_address_id property of
sales/order_address entity (
sales_flat_order_address table) which in my case is always
Well I wonder .. what is is for? My only guess it is used at the stage when order is not yet finalised but I failed to find a proof in the code. Another guess may be backward compatibility.
The existence of this property/column is not critical of course. Just a question of curiosity.