Buy the Measurement - Used to make the qty value render differently. Still used by Tier 2 and installs. Linked from: https://support.boldcommerce.com/hc/en-us/articles/208631356-Upgraded-Install-Instructions-for-Buy-the-Measure-includes-Product-Options-Premium-Support

bold-btm-upgrade-fields.liquid

<!-- bold-btm-upgrade-fields.liquid -->
{% comment %} Last Updated: 2017-01-06 {% endcomment %}
{% capture bold_btm_upgrade_fields_liquid %}
{% comment %}
BOLD-BTM-UPGRADE-FIELDS.LIQUID - Upgrades Buy the Measure to work with Premium (Priced) Product Options   

USED BY: Buy the Measure

To use this file:
* Include this on the product.liquid page with the other BTM initialization scripts 
    Example: {% include 'bold-btm-upgrade-fields' %}
{% endcomment %}
<script>
var Bold = Bold || {};
Bold.upgradeBTMFields = Bold.upgradeBTMFields || function(form){
  var $form = jQuery(form);
  $form.find('.btm_upgrade').remove();  /*Remove the BTM upgrade fields (if they exist) before adding new ones*/
  $form.find('.btm_quantity_input[name="properties[quantity]"]').attr('name', '_btm_quantity');
  
  if($form.find('.bold-btm .measurement_div').length){
    var btm_qty = 1;
    
    if($form.find('.btm_quantity_input').length)
      btm_qty = parseInt($form.find('.btm_quantity_input').attr('name', "_btm_quantity").val());
    else
      $form.prepend('<input type="hidden" class="btm_upgrade btm_qty" name="_btm_quantity" value=' + btm_qty + '>');
    var true_qty = parseInt($form.find('[name="quantity"]').last().val());
    var btm_ratio = true_qty / btm_qty;
    
    var option_qty_input = '<input type="hidden" class="btm_upgrade btm_options" name="quantity" value=' + btm_qty + '>';
    var btm_ratio_input = '<input type="hidden" class="btm_upgrade btm_ratio" name="properties[_btm_ratio]" value=' + btm_ratio + '>';
    $form.prepend(option_qty_input).prepend(btm_ratio_input);
  }
};
jQuery(document).on('click', 'form[action*="cart/add"] [type="submit"]', function(){
  Bold.upgradeBTMFields(jQuery(this).closest('form'));
});
</script>
{% endcapture %}{{ bold_btm_upgrade_fields_liquid | strip_newlines}}