When we add variants to the cart, it apparently has no bearing on the quantity on hand shown to be available to the customer. When they select the variant on the product page you can see it refresh, and nothing changes if the quantity for that product is zero. It's as if it was available even though that variant has no stock. When you get to the cart page it shows "quantity on hand", but this is apparently for the main product itself, not of the variants in the shopping cart. It's only when you go to checkout do you find the product is not "in stock". :(
Yes, I have inventory management enabled. DNN v6.0.1 - SmithCart v4.60