the system will remember always the first referral, and that is the one that prevails. if you used the referral A first, then the conversion will be assigned to B, even if you used the link B the time of purchase. the initial referral is still A, therefore the assignation is to A.

they are different affiliates so there shouldnt be any connection, surely?

no, that's not what i was saying. you said yourself that you were making tests. I asume you have used the same computer (even the same browser, maybe?) to access the site using the two different affiliate links. what i'm saying is that the system will remember the FIRST one and this is the one that will dominate, when the user is the same (I mean, the user testing, that is you). it know it is the same computer and/or browser.

if you really want to try, please try it with a different browser, ideally from a different IP (like a REAL case would be) and then it will assign it to the 2 different accounts.

ah, ip explanation makes sense, thanks Germinal. I will try from a different locatio but I suspect that works fine. Thank, Ben