Kentico 11 brings with it a host of changes, including many related to E-commerce. The release notes for the whole CMS are quite extensive, however, so it’s easy for the information you need to get lost in the noise. The purpose of this article is to draw attention to, and, in some cases, expand upon the breaking changes in Kentico 11’s E-commerce solution. This information is important for those upgrading sites which utilize E-commerce features to Kentico 11.
I wish you the best of luck upgrading your online store to version 11! To prepare further for the upgrade, I recommend that you see the upgrade documentation and the rest of the release notes. You can also check out this article breaking down the structure of Kentico upgrades in general.