Just did this a couple of months ago coming back from Australia with 2 cases of wine. On the GE kiosk, there is no specific question about liquor; however, I was told to answer Yes to the question that asks if I am bringing back more goods than allowed by my exemption.
I got the receipt with the X, went to the CBP agent as the next in line, declared my wine. He stamped my receipt and off I went. No problems.