Reconciling shopify sales to shopofy advance

If you have a shopify advance the repayments come off the gross sales before it hits the bank

 

Ive recorded the sales as 

 

Dr Bank

Cr Sales

 

The loan repayment is 

 

Dr Advance

Cr Bank

 

How can I enter the sales as represented by the advance repayment? Obviously the Cr is to sales. What's the other side?

 

T.I.A. 

 

Kr