What is the safest way to bulk-edit Shopify products?

The safest bulk-edit workflow is export or snapshot first, define exactly which fields will change, test on a small set of products, validate the results, and only then apply the update to the full catalogue. Avoid broad overwrites when only one field needs to change. Preserve product and variant identifiers so updates match the correct records. For high-risk changes such as prices, URLs or variant structures, use an approval step and keep a rollback file or versioned source of truth.