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After importing the data, it's important to thoroughly test your new Woocommerce store to ensure that everything is working as expected. You can also verify that all the data has been successfully migrated.
Import data into Woocommerce: Once you have your data in a Woocommerce-compatible format, you can import it into your new Woocommerce store using the Woocommerce Importer plugin. Go to Woocommerce > Import > Run Importer and follow the on-screen instructions to import your Opencart data.
https://litextension.com/woocommerce-migration-tool/opencart-to-woocommerce.html