The Iowa City Area Chamber of Commerce and Iowa City Area Development Group will continue operating as separate organizations rather than pursue a merger.The organizations will instead collaborate on developing and implementing a long-term vision for the economic vitality of the community, according to a report issued Tuesday. That relationship will include more formally aligning operations and reducing duplicative efforts.“We spent the spring talking to chamber members, ICAD investors from the communities that we serve and business leaders,” said Mark Nolte, ICAD president and CEO.