We need to create a custom CSV Magento 2 Export. In particular, we need to add a column (or an attribute in additional_attributes column) that indicate the attribute’s position inside the category it is inserted.
Is there a way to do this?
ok, I have added a new product attribute that I named "test_category", then I associated this attribute to an attribute set. Finally, I edited a product with some data for this added attribute.
--> with the above, I can see my new product added automatically in the additional_attribute column for the product export feature as long as the product has data for this attribute.
--> now in a second step, it seems your blocker is that you need to create a script that assigns category position to this product attribute.