Agreed, 2Co's upgrade is a total mess.
V1 even stopped storing x-cart order ID's, which has made our transition to V2 even more troublesome.
Someone over there needs a good kick in the rear end, doesnt help that they've lost a $$$$$ payment to us too
.
They've upset alot of their customers, in the process, most people I know who use them are now looking for alternatives, ourselves included.