Enable product summary: Use this option if you have a different field in addition to your product description that you would like to be updated.
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​Enable JSON format on product summary: Sometimes, merchants have metafields that are JSON objects that are useful to show for example bullet points. If you use a JSON type for your product summary, you can activate this option and provide an example of a valid JSON.
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​Write back product description to a custom metafield: This option is useful if you do NOT use the standard product description on Shopify and would like to write the product description to a custom metafield.