Duplicate Elementor Templates with Duplicate Post Plugin (WordPress)

functions.php

// when duplicating a elementor template elementor save_post hook get's fired before all the post meta is duplicated
// and elementor sets the template type to the default page --> popups cannot be dupliated
// so the elementor key is removed from duplicating and duplicatd manually later on
add_filter('duplicate_post_meta_keys_filter', function ($keys) {
    if ($k = array_search('_elementor_template_type', $keys)) {
        array_splice($keys, $k, 1);
    }

    return $keys;
});

add_action('dp_duplicate_post', function ($newPostId, $originalPost) {
    $elementorTemplateType = get_post_meta($originalPost->ID, '_elementor_template_type', true);
    update_post_meta($newPostId, '_elementor_template_type', $elementorTemplateType);
}, 11, 2); // prio 11 after duplicating