If one or more of the quantities is changes on the checkout_multiship page and the customer doesn't subsequently click the "update" button but clicks "continue checkout" instead, the quantity-related changes are lost, leading to confusion.
Incorporate some javascript checking to have the customer confirm the leave from the page if a quantity is changed without a subsequent update.
If one or more of the quantities is changes on the checkout_multiship page and the customer doesn't subsequently click the "update" button but clicks "continue checkout" instead, the quantity-related changes are lost, leading to confusion.
Incorporate some javascript checking to have the customer confirm the leave from the page if a quantity is changed without a subsequent update.