In Marketpress, does the Shopping Cart empty itself out once the user leaves the page?? For example, if a user adds an item to their cart, will that item be removed from their cart if they do not purchase it and leave the site?? I only ask because the site that I am using this for features all custom products; therefore, I am setting the inventory level on each product to 1, because each product is individual. Once someone adds the product to their cart, it gets removed from inventory. I just want to make sure that it is put back when they exit the site without actually buying it.