Hi Vme,
Thanks for reaching out.
My understanding is we are trying to allocate the transaction from the old bank account to the new bank account, Generally, if it's a transfer from one bank account to another we don't allocate it instead we match it as a transfer money transaction. This will make sure that there would be debits from the old bank account and credits to the new bank account.
If my understanding is incorrect please feel free to clarify. Also, let me know if you need any further assistance with this. I'm happy to help.
Cheers,
Genreve