Anyone have any advise on this? I'm running into the same problem.
Place an order where the total is $17.98, enter a discount coupon for $10.00 giving a total of $7.98. Press submit, authorize.net charges the $17.98, yet in the admin interface it's showing total price of $7.98 and that the discount has been applied.
I'm running OSC Dox MS-MAX1.5.5 and this has the discount contribution.
This is driving ME CRAZY!! and costing lots in refunds that we need to submit to clients. Refunds is like 3.9% of the total refund that they are billing us. :((
I read that this is a fast fix and willing to pay someone to fix it if they can.