On the macOS version of MAPublisher sometimes 'Recent' and 'Search History' is not saved in 'Specify Coordinate System'. This occurs across different versions of macOS and MAPublisher versions. If the recent projections are not saving on Mac, open Finder > Home (or Go > Home), and find the .config folder (might be hidden). Right click > Get Info > Change permissions to be Read & Write for all.:
1. Open Finder > Home (or Go > Home)
2. If the directory is hidden, please input this combination while you are on the Home folder: "CMD+SHIFT+."
$HOME is usually the active user and can be identified by the house icon
3. Then you need to change the permissions of the folder for the coordinate systems, ".config", to Read & Write
Going forward your coordinate systems should be saved in 'Recent' and 'Search History'.