We use multiship, however we have had a few instances where customers select ship to "Yourself/Me" as their delivery option when adding the product to the cart, but they intend to have it ship to someone else. The issue is that they enter their own information in Billing Address, then they enter their gift recipient's information in the Shipping address (ignoring the Ship to Me title) and this shipping address then overwrites the billing address when they complete the order. So, we are left not knowing the billing address information for the customer. It appears this happens with the customer-address-change.done call. Is there an easy way to prevent this from happening?