Why are some fields missing when I export Shopify products to CSV?

Shopify exports do not necessarily include every type of data attached to a product, especially custom or app-managed fields. Some information may live in metafields, metaobjects, separate objects or external systems rather than in the standard product CSV. Before relying on an export as a full catalogue backup, identify which fields your store actually uses and confirm where each one is stored. For complex catalogues, a product-data inventory is useful so teams know which system is authoritative for each attribute.