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Shipping amount issue after upgrading from 1.3.x to 1.7.x
My magento site has an issue with shipping module after upgrading from 1.3.x. The shipping cost is changed after click Continue to select Payment method. See image attached. I spent some hours to research this issue but no luck.
According to me you are upgrading Magneto 1.3x and make note that before upgrading the Magento1.3 x, take a backup for your database, than change the price of the all list and then upgrading your Magento.if you are upgrading Magento 1.3 to Magneto 1.5 use a “ mage” installer and with a Magento Connect 2.0.