Hi Sk Shaikat,
I changed woocommerce-upcoming-product.php and tested with and without
load_child_theme_textdomain( ‘wup’, get_stylesheet_directory() . ‘/languages/’ );
in my functions.php, but still did not pick up translations from child theme language directory.
This works ok now. Woocommerce translations are coming from child theme language directory, but might, of course, be because it came with the theme itself.
Br,
Jukka