Applying Coupon from Edit Order Details

-- HikaShop version -- : 2.6.0
-- Joomla version -- : 3.4.5
-- PHP version -- : 5.5.27
-- Browser(s) name and version -- : Chrome 46.0.2490.86 m
-- Error-message(debug-mod must be tuned on) -- : No error message

When I go to edit the details of an unpaid order, I have the option of adding a coupon under "Additional information." However, when I do this, I still have to manually set the coupon amount on the "Additional information" dialogue, manually set the order to "confirmed" (my paid order status) if the coupon brings the total to zero, and manually increase the number of uses of the coupon code. Is there a way for this to be automatic like it is when the user applies the coupon from the front end?

Thanks,
Ian

Sorry - meant to put this in Sales and Orders/Order Management, but it seems I selected the wrong topic by accident!