From what I understand, APA state and regional chapters have a greater degree of autonomy compared to specialty divisions. Note that many of them have names that don't mention the APA; Ohio Planning Conference, Michigan Association of Planners, Georgia Planning Association, and so on.
However, there's some independent state planning organizations such as the Florida Planning and Zoning Organization, New Jersey Planning Officials, New York Planning Federation, Planners Association of Washington, and so on, which aren't associated with the APA. From what I gather, these are active but "orphan" state chapters of the long-defunct American Institute of Planners and American Society of Planning Officials. When the organizations merged to become the APA, most of the state chapters of each organization also merged. Several chose not to merge, though, so the result is these indie state planning organizations.
Is this actually the case, or is there another story behind these independent state planning professional organizations? With an APA state chapter that also serves the state, what role do the independent state planning organizations have?