Yeah I think the main difference you are seeing is that when using a NATS link, it goes thru NATS first and records your raw/unique hits. When using a CCBill program and not specifically using the CCBill link, its impossible for CCBill to track that raw/unique hit.

As for changing the link, first I would ask the affiliate program itself as there MAY be a valid reason they are not providing you with a direct CCBill link, for instance, if they have 2 billers (not cascading thru ccbill) and the link that they provide you to use has your account info from those two billers. This is a "cheap and nasty" way of setting up multiple billing on paysites, but its not a good way as you can see, since you are not able to get your full stats.

Now, if the paysite is ONLY using CCBill (and possibly a ccbill cascade), then IMHO, you should be using CCBill links, to allow full tracking and cookies and such. Otherwise, you are risking losing commissions.

Care to share the programs with us?