The shareholder Realtor groups that filed a lawsuit to block the merger of two Chicago-area multiple listing services have blocked — at least temporarily — a final vote on the deal. ICNY 2020 ICNY2020. Real estate's premier event. Show Comments Hide Comments Comments Sign up for Inman’s Morning Headlines What you need to know to start your day with all the latest industry developments Sign me up Success! Thank you for subscribing to Morning Headlines.