title: WooCommerce - Hide specific variations
body: <p>How can I hide a variation from the dropdown on a product page, but still let it be purchased through WooCommerce URL coupons?</p>
  
  <p>If I make the variation not active, it is hidden from the drop down, but I get the message "This product can not be purchased" in cart. I just want to hide it from the list, not disable it entirely.</p>
  
  <p>Any help is greatly appreciated.</p>
  
  <p>Thank you!</p>