Replace heading texts on admin single Order pages only in WooCommerce

Question

I'm trying to modify the Billing and Shipping text in the Order Details page, in my admin panel. (Screenshot)

I know, I can achieve this by editing the "class-wc-meta-box-order-data.php" file in the following directory & I was successful but know my changes will disappear after the update.

File location:
wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php

The Billing text is located on 312 Line & the Shipping Text is located on 428 Line.

I want to replace Billing with Sender Information

Shipping will be replaced with Recipient Information

I've tried using the following code & It worked, but I want to replace these words on the Order Details page only, in the admin panel, but this code is replacing these words on the frontend as well & I just want to update these words in the admin panel.

add_filter('gettext', 'translate_reply');
add_filter('ngettext', 'translate_reply');

function translate_reply($translated) {
$translated = str_ireplace('Shipping', 'Recipient Information', 
$translated);
$translated = str_ireplace('Billing', 'Sender Information', $translated);
return $translated;
}

I've also tried placing the file directory in my child theme (after editing it), but it didn't work.

Answer 1

The following will only target Admin single "edit" (and "new") order pages:

add_filter(  'gettext',  'change_admin_single_order_heading3', 10, 3 );
add_filter(  'ngettext',  'change_admin_single_order_heading3', 10, 3 );
function change_admin_single_order_heading3( $translated, $text, $domain  ) {
    global $pagenow;

    if ( is_admin() && ( ( $pagenow === 'post.php' && isset($_GET['post']) && get_post_type($_GET['post']) === 'shop_order' )
    || ( $pagenow === 'post-new.php' && isset($_GET['post-type']) && $_GET['post-type'] === 'shop_order' ) ) ) {

        if( $text === 'Billing' && $domain === 'woocommerce' ){
            $translated = esc_html__( 'Sender Information', $domain );
        }

        if( $text === 'Shipping' && $domain === 'woocommerce' ){
            $translated = esc_html__( 'Recipient Information', $domain );
        }

        // Addition asked in your comment
        if( $text === 'Shipping:' && $domain === 'woocommerce' ){
            $translated = esc_html__( 'Some text', $domain );
        }
    }
    return $translated;
}

Code goes in function.php file of your active child theme (or active theme). Tested and works.