When on the Inventory tab whilst editing a product there is the option to set Qty for Item's Status to Become Out of Stock.
I've enabled Backorders on the product & would like to set the out of stock value to a negative number, thus only accepting a limited amount of backorders.
However, Magento doesn't seem to set the product to out of stock once that negative stock level is reached. Is this functionality not natively supported by Magento?