Making Payouts with Affiliate plugin


I need a little clarification on how Affiliate works when it comes to payouts. I received my first referral today and clicked on "Pay Balance" for that affiliate.

The table says:
Credits 7.00
Debits 0.00
Payments -7.00"
Balance 0.00

So, what just happened? I checked my paypal account and there is no deduction. Does it apply a 7.00 discount to the afilaites next payment?

Thanks, Chris