Hi @patchyart,
Unfortunately, a specific hook is not available to unset fields from the select dropdown in the Product CSV Importer & Exporter tool. However, you can manipulate the data using the woocommerce_product_import_pre_insert_product_object filter before it’s imported. This allows you to modify the product data before it’s used to create a product object.
If you still need assistance, we recommend asking development questions on the #developers channel of the WooCommerce Community Slack. Many of our developers hang out there and will be able to offer insights into your question.
I wish I could help more, but hopefully, this gets you going in the right direction to get the job done.
Hi there. We haven’t heard back from you in a while, so I’m going to mark this as resolved – we’ll be here if and/or when you are ready to continue.