Customer receipt

SUGGESTED

I have 2 bank accounts in SAGE.  We want to transfer money from one account to the other to clear a customer balance.  If I record the money coming in a customer receipt, that clears the customer balance and reconciles that bank.  How do I post the payment out of the first account ?  If I post a transfer I end up with 2 receipts in the receiving account (the customer receipt and the transfer in)  If I post a bank transfer then the bank accounts both reconcile but I am left with the customer balance.  How can I post this please ?