When importing a spreadsheet of products and SKUs by removing the attachment from an SKU (that is, leaving the "_Anexos" column blank in the spreadsheet), this change is not reflected in the SKU registration. It remains with the linked attachment.

1. Access the catalog.
2. Navigate to Product Registration > Products and SKUs > Import/Export Products and SKUs.
3. Open the Export/Import dropdown > Import.
4. Select a spreadsheet of products and SKUs that contain SKUs with previously linked attachments and leave the value of _Anexos blank.
5. Click Import.

First, create a new attachment and leave this attachment inactive. Then fill in the spreadsheet with the value of the new attachment you created and import the products.