How do VIP offers effect Affliates?

The affiliate cannot lose money from VIP, as the amount of cash paid will always be lower than the MGR.

They may not make as much as before, but they cannot lose any money.

They can, however, lose money with people who signup and stop playing as soon as they clear the initial bonus. In that case, the bonus paid might be higher than the player's MGR and the negative amount would hit the affiliate.