Moving my Magento store

The biggest challenge with Magento is keeping the site live while moving huge amounts of data. We were worried about losing sales during the transition, but we found a way to sync everything in the background. You can check the details at https://www.shopping-cart-migration.com/supported-carts/55-magento as they offer a very solid migration preview feature. It allowed us to audit our images and product descriptions before the final go-live. We moved about 10,000 items in one day. It is a much safer approach than risking a broken site with manual imports.