[Plugin: Custom Permalinks] editing parent category breaks custom permalinks for child categories

If you have a category A with children X,Y,Z, all of which have custom permalinks defined, then edit A, the custom permalinks break for X,Y,and Z and result in 404 errors. When you go to edit X,Y, or Z, the custom permalink shows up, and re-saving the category (without modifications), fixes the 404 error. I have modified the custom_permalinks_save_term function to prevent this. I don’t think it is a great fix, but it works for now. Here is my new custom_permalinks_save_term function:

function custom_permalinks_save_term($term, $permalink) {
  custom_permalinks_delete_term($term->term_id);
  $orig_table = get_option('custom_permalink_table');
  $new_table = array();
  if ( $permalink )
    $new_table[$permalink] = array(
      'id' => $term->term_id,
      'kind' => ($term->taxonomy == 'category' ? 'category' : 'tag'),
      'slug' => $term->slug);

  foreach ($orig_table as $permalink => $info) {
    if ( $permalink )
      $new_table[$permalink] = array(
        'id' => $info['id'],
        'kind' => $info['kind'],
        'slug' => $info['slug']);

    update_option('custom_permalink_table', $new_table);
  }
}

http://wordpress.org/extend/plugins/custom-permalinks/