Hi,
The method Dynamicweb.Ecommerce.Orders.SalesDiscounts.PromoCodeChecker.CheckOrderPromoCode is not validating the dates accurately, returning a voucher code to be both valid and expired at the same time, when the Valid To date is set to "Never"
Check it out here http://www.screencast.com/t/MHzDuYWzLlz
This sounds like a bug. Can you confirm?
Best Regards,
Nuno Aguiar