Loading Shortcode Templates from Child Theme

Hi,

I am wanting to modify portfolio.php in my child theme. I have added this code to my child theme’s functions.php file and created a folder called shortcodes in my child theme and copied portfolio.php to this folder. However, changes I make to that file don’t display. I can get the changes to display if I make them in the parent theme’s portfolio.php file but not in my child theme. Please let me know when/if you support child theme changes to these files as you used to.

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;
}

Thanks!

Angela