Recently I upgraded a Magento store from 1.4.0.1 to 1.5.0.1. Magento has changed order tables from key-value type to flat structure in 1.4.1.0, which caused a big problem for my upgrade – all orders lost their status and state value. I have not discovered what exact reason made it happen, but I know it is… Continue reading Reinstate Magento order status after upgrade