Pretty link has a standard forwarding parameter so when i enter a nats link the parameters in the standard syntax for example the pretty link
http://yoururl.com/coollink?product_id=4&sku=5441 will forward to the target URL and append the same parameters like so:
http://anotherurl.com?product_id=4&sku=5441.
However that doesnt seem to work with the ccbill links, so i dont enable it and just use normal redirect.