Amazon is not relying on shipping override policy for managing different shipping policies. They are using shipping templates and a note is saying on their website: Note: External applications that send Shipping Overrides feeds to Amazon's systems will need to be updated to support the new MerchantShippingGroupName field in the Product XML feed. Using this field you can assign SKUs to a specific Shipping Template. When is it going to be this way on M2ePro ??