No, migrating your items over to Zibbet will not close your Etsy store. In fact, Zibbet just announced that they will be linking with other selling venues and Etsy will be the first. This means that when an item sells on Etsy the quantity automatically adjusts in your Zibbet store. This will be a MAJOR time saver and will make selling on both marketplaces much easier. Pricing for some of their packages is expected to drop, too!