(Bloomberg) -- American Express card holders and other shoppers are hurrying to spend store credits and gift cards at Saks Fifth Avenue as the cash-strapped retailer heads toward a potential bankruptcy restructuring. When a company files for bankruptcy, it’s not automatically required to honor gift cards, sometimes leaving consumers empty-handed. That’s worrying for customers such as Julia Portela, a 38-year-old travel content creator in Miami. Her American Express Co. Platinum card has an annual fee of $89 ...