Unallocated payment

Hi,

I had incorrect information on an invoice for an account customer on the cash sales acc. I have credited it but the invoice was paid in May and reconciled. For this reason, I have unallocated the payment which was made from 3 transactions. When I unallocated the payment the cash sales account activity now is showing cancelled allocation and I can’t find which particular transactions have been previously allocated to the incorrect invoice. Could you please help me to find the payments for the particular invoice which has been reconciled ?