We use plain text metafields on both product and variant levels. In the Impulse theme, when I bind these as Dynamic Sources in sections or blocks, the front end renders an empty value. The same issue appears in the Shopify Order Printer app where the pick list should print variant and product metafields for each line item but comes up empty. I need you to audit metafield definitions, namespaces, keys, and types, verify data on a couple of example products and variants, and correct the theme so product metafields render reliably and variant metafields update based on the selected variant. Please fix the Order Printer Liquid so each line item prints the right product and variant metafields with sensible fallbacks if a value is missing. Work on a duplicate theme, keep edits small and documented, and provide a short change log with file paths plus quick screenshots or a Loom showing the fix. I can provide collaborator access, a duplicate theme, Order Printer access, and two product URLs and two order numbers with known data.