We run a store that accepts trade-in item for new products. We have added metafields to each product page that indicate which items are accepted for trade-in for that product. We have managed to add this information to the cart as well as to the order history under each customer's account but would like to be able to include it as a printout in their order. So, we would like to be able to include this as a column (or under product title as we've done in the other locations) on the packing slip.
The Shopify Order Printer app limits the liquid variable list that it accepts and so doesn't seem to be able to read the metafields that I am trying to include.
Any suggestions? ex. http://upwise.co/collections/trade-in-deals/products/meelectronics-sport-fi-x6-earbuds
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