new shortcodes or edited shortcodes in child-theme

normaly we have to preserve the structure of the parent theme.
but for shortcodes we only have to make a subfolder in the child-theme-folder (normaly: enfold-child) called shortcodes and add this to functions.php of the child-theme:

add_filter('avia_load_shortcodes', 'avia_include_shortcode_template', 15, 1);
function avia_include_shortcode_template($paths){
  $template_url = get_stylesheet_directory();
      array_unshift($paths, $template_url.'/shortcodes/');
  return $paths;
}

that works good – but what if we want to replace a php file in framework or includes folder?
I tried only to preserve hierarchical structure and make subfolders the same name in enfold-child.
I tested it with loop-index.php for a thread here on board – and it works without any snippet in the functions.php – is that ok- is it the usual way?

Or do we need a snippet too?