Hi all, thanks for raising this one.
It is a question I get often and it's a very valid question, however you have nothing to worry about.
Our program uses multiple tracking options to help ensure that the players you send are tagged to you. In this case, and without getting too deep into it we have two sets of ID's for each and every affiliate, a Global Affiliate ID (GAID) and a run of the mill Affiliate ID (AID).
The Global ID is a fixed number which you will see in your tracking links when you grab them from the admin. The AID is the one you see when you click through your link, this is a different number from the GAID.
The AID is a random automated number that is unique to your account and with the likes of Aladdin's Gold and Lucky Red you will only see that AID. But either one tracks to you.
If you check out Club World links, you will notice the full string of variables in there from the AID, the casino ID, the SubGid and the GAID.
So all it is, is different ways to track.
Does that make sense? ;D