Good afternoon.
You have a product
https://box.optodess.com.ua/admin/shop/products/17458/edit/ - it has a completely different barcode. The barcode you specified is recorded in the filter for this product - but the action exports stocks by products and their barcodes, and not by stocks by filter combinations associated with additional warehouse fields.
If you need to modify, so that if the product has a filter with barcodes, which is associated with the warehouse and use them to transfer the quantity in the warehouse with such a filter (or maybe the total quantity of the product, specify here), then such a refinement will take about 3 hours to implement.