Coupon value deducted from cart, but not from order

I have a problem - when a coupon is saved in the cart, the value is deducted giving a zero value (correctly), but when the order is confirmed the coupon value is discarded and the order is saved at the full amount:

Example:
See: http://www.salonprintanddesign.co.uk/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2459&virtuemart_category_id=318&Itemid=724
Select Qty 250
Coupon code: SPDCH1

Regardless of what payment option selected, the full amount is stored and the payment defaults to the credit card option.

Any ideas?

Hello,

Sounds like you are dealing with this problem:
http://forum.virtuemart.net/index.php?topic=120972

To fix, go to awocoupon->configuration and set
'Order state to trigger coupon processing' to anything other than 'order creation'. Probably best to set them to
- confirmed by shopper
- confirmed

Not sure it is the same as this. That thread seems to refer to releasing the coupon after a transaction is declined. However I'm not even getting that far.

I've tried setting the order state as you suggest, but the coupon value still gets dropped, and the user gets redirected out for payment of the gross amount.

Hello,

What version of Virtuemart and AwoCoupon is this?

Does it do this for all coupons, or just coupons where the balance left to pay is 0?

Joomla: 2.5.28
VM version is 2.6.14
AWO Coupon 2.3.5

Seems it happens on any transaction

FYI, in case it makes any difference, the coupon SPDCH1 is a parent coupon consisting of a product coupon (applicable to 2 products), and a shipping coupon.

Ordering a mixture of products, one of which qualifies for the coupon, the coupon is applied in the cart correctly, reducing the total as expected, but the total passed to the payment processor is the gross amount, regardless of what is shown in the cart.

Hello,

Ok, can you try this:
https://awodev.com/forum/awocoupon/help-section/minimum-value-not-reached-0#comment-7961

That seems to have done the trick.

Will we have trouble with this if updating?

Hello,

No, this fix is already part of the latest update 2.3.6.

Great. Thanks for your help :-)