There is no functionality provide WooCommerce to retrieve last category page viewed. But, I solved.First create a custom action, check if page is category page, and set Cat ID to session data if so. Then on your button, use this to get proper URL.add_action( 'init', 'wp_check_product_cat_sess');function wp_check_product_cat_sess(){   ...

<?php //add custom fields to WooCommerce products Single Page, Cart Page, Checkout Page, Order Detaile And Save To Database Table Name "wp_woocommerce_order_itemmeta" add_action( 'woocommerce_before_add_to_cart_button', 'add_fields_before_add_to_cart' );function add_fields_before_add_to_cart(){ ?>  ...