Editing the Item Options Field Replacement for Packing Slips

When using a product customization app for Shopify like Customily or Kickflip, a plethora of URLs are added to Order Summaries, which in turn are used for the Item Options Field Replacement. Normally this is good for production, but because ShipStation takes the entirety of the Order Summary's description, as opposed to being able to select specific portions of it, all of these URLs are stuffed onto Packing Slips. We either need a way to edit the values of these dynamic fields, or allow certain JavaScript functions within script tags in the HTML, such as substring(), in order to get rid of the unnecessary text.