When a logged customer place an order, magento will put the addresses by default if this customer has not a default billing and shipping address on his account.
It works only if the billing address are not the same as the shipping address, otherwise Magento will only put the shipping address by default.
Do you know where I can manage this functionnality to also put the shipping address on the default billing address of the customer if both address are the same (checkbox 'My billing and shipping address are the same' checked).
