Just found this great article: http://www.blog.magepsycho.com/updating-product-qty-in-magento-in-an-easier-faster-way/ but something works not very well. When I have a CSV with the columns "sku" and "is_in_stock", and I use the script, it also sets the "qty" to 0 when "is_in_stock" is 0. How is that possible? Because I only want to update "is_in_stock", and not the "qty".
Can you help me with this? Thanks in advance!