- Replacing or deleting a file no longer auto‑purges its cdn.shopify.com URL; cached content persists until TTL expires.
- Use Shopify URL helpers (file_url, image_url, asset_url) or fetch URLs via Admin/Storefront APIs to emit versioned URLs (?v=...).
- Hard‑coded CDN URLs in descriptions, themes, or printed material will keep serving old content—migrate to dynamic patterns.