In April I published a diagram that showed some recent customer migrations between eCommerce platforms eCommerce Websites that Re-Platformed in 2013/2014 (Part 1). In this post you can find even more examples of such customers.
E-Commerce-Websites-that-Re-Platformed-in-2013_2014-(Part-2)-webready

References:

Sainsbury’s new multichannel grocery platform from Salmon now fully live
eBay Inc.’s Magento Platform Fuels Webstore for Baby Product Maker
Comark Turns to Demandware to Power Digital Commerce across Multiple Brands
Rocky Brands Launches E-Commerce Sites On The Demandware Platform
la prairie Invigorates its Digital Commerce Operations with Demandware
EE selects hybris to support its Digital Program
Ekosport chooses Intershop 7 to Power International Websites
Wholesale Sports Outdoor Outfitters Selects hybris to Drive National Expansion and Create an Advanced User Experience
Trony Goes Online with Intershop
Smith Optics moves to a new platform to foster multichannel selling
Foschini Selects Oracle Commerce to Drive Omnichannel Strategy
Chemmart Takes to Online Retail with Oracle Commerce Suite
See’s Candies Selects Demandware as its Digital Commerce Platform
Tilly’s Selects TAISTech to Implement Oracle Commerce 11.0 for Website
Tommy Bahama Implements hybris software to Launch an Enhanced Online Outlet Experience
Suspension Parts Direct Using Web 2 Market’s ShowMeTheParts Integration To Sell Auto Parts Online And On Google Shopping