Yes, Coupon Codes, Promo Codes are part of Promotions. When you move Promotions using StagingPro, StagingPro follows the following steps:
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Coupon Code associations are with SKU’s instead of Product ID’s, because they can be different IDs on different BigCommerce instances.
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As of now all promotions are moved in its entirety. Moving selective promotions will be considered as part of the development roadmap.
IMPORTANT: Be advised that Promotions (created using the API) cannot be edited. Workaround is to delete the promotion, recreate it correctly in source and then migrate so it transfers across correctly. Once BigCommerce allows for Promotions (created using the API) to be edited manually, we will provide the functionality.
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