Bank Feed - approval over multiple feeds

Hi I have a Bank feed for 2 bank accounts and Amex CC account.

My Amex payment is made from both my Bank accounts which totals the whole amount that will appear in my Amex

The payment in my Amex bank feed shows the payment of 24,411.25

ie 22,000 from 1 bank and 1411.25 from bank 2.

i created a transfer transaction from both my bank feeds to amex.

when i go into my Amex feed to approve the transaction it won't let me select the transactions to reconcile the Amex amount.

 What option do i have to approve the payment in my Amex feed?