Order metric incremented because of external links?
On our ecommerce website, I have an issue with the calculation of order metric.
Once I arive on the confirmation page (/payment-successful.html), an Adobe Analytics server call is made, which is ok. But here I have a button for a contest and if you click it, you will be redirected to an external link AND another Adobe Analytics server call is made on my page, with EXIT LINK: undefined and the orderid itself is incremented again.
This will result in my adobe analytics report that for the same order id, I will have 2 orders (or more, depending on how many times you click on that contest button). For data accuracy, I created a custom metric which will count only the unique values of order id, but I don't like this workaround.

I should mention that we tested and there is no possibility that the same order id to be generated for another order (after few days or weeks or months).
Our devs suggested to turn off tracking of external links, is that a solution?
Please let me know if any of you had a similar issue and how you solved it.
Thank you!
