Duplicate order information not being replaced

[JouniL]

I actually posted this to the API notes section already (which I
shouldn't have), but heres the same question.

I wonder if I've understood something wrong... I have a transaction
(id 007) and that transaction includes an item (sku 123, quantity 4).
So I've made the order, and it shows up in GA just right. But lets say
that I made a mistake, and only wanted to order 3 items, not 4. So I
go and edit my order accordingly and se the quantity to 3 (order id
and sku stays the same). When I sent the tracking info for this I've
now got order id 007 showing in GA with 7 times sku 123. I was under
the impression that if the order id stays the same, the info would be
overwritten? Umm.. help?

[Nick]

Hi,

This groups if for developers building on our data export API. For
general implementation questions please use our general user forum:
http://www.google.com/support/forum/p/Google+Analytics/?hl=en

If there are two order id's within the same session, Google Analytics
will only report the first one. This ensures if people refresh the
page, the total revenue doesn't double.

-Nick