I'm developing a new site using woocommerce 2.1.6.
In my child theme I would like to edit the layout of the of the related products and upsell products templates.
I have edited the related product template in my child theme successfully, however when I copy the up-sells template to the same folder the upsell section disappears from the website - even if the template file is original or even if I swap its contents for the related products contents.
woocommerce/single-product/related.php - works
woocommerce/single-product/up-sells.php - doesn't work
I have tried to add the up-sells.php to different themes but it always seems to break whereas related.php always works.
Please can someone help? What do I need to do to successfully override the upsells template?