I do believe that cs-cart ultimate tables should be accessible through the csv upload.
Indeed, if we share products among different stores, it's impossible to bulk edit information from one store or even to bulk edit for both stores.
Only main store can get bulk edited which is a major bug I believe.
In addition to that, information in all stores should contain information from all stores & not only from main store.
I do believe there is still much to do with the ultimate version of cs-cart.