Sorry for coming back this late, we found a solution.
There seems to be an issue with the path acf takes to load the json. When you make changes in one of the jsons of the parent acf saves it in the child theme, as it should however it still reads the parent json.
// Integrating Advanced Custom Fields:
remove_filter('acf/settings/save_json', 'settings_save_json');
add_filter('acf/settings/save_json', function() {
return get_stylesheet_directory() . '/acf-json';
});
remove_filter('acf/settings/load_json', 'settings_load_json');
add_filter('acf/settings/load_json', function($paths) {
array_push(
$paths,
get_template_directory() . '/acf-json',
get_stylesheet_directory() . '/acf-json'
);
return $paths;
});
This seems to push the paths again.
