CSV
CSV in Magento: import and export formats, generating CSV reports, handling encoding and large files.
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https://github.com/DeployEcommerce/module-url-rewrite-import-export
Admin tool to export and import the url_rewrite table as CSV with schema-validated headers, automatic safety backups, and streaming for large datasets. Supports upsert/skip/fail duplicates, ID preservation, and optional truncate, with a post-import results summary.
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