Editing the account of an internal transfer transaction changes only one transaction (out of two)

I am running HomeBank 4.5.4 on Windows 8.1 Pro ITA (vers 6.3 build 9600).

Entering a transaction with "internal transfer" payment you are asked to choose a destination account (so Homebank generates a symmetrical transaction from destination account to the current one).
Changing the destination account of an internal transfer transaction already entered has effect only on the record you are editing and not in the symmetrical one (created automatically).

To get this error:
1. Open the example file (example.xhb)
2. Create a new account (eg "test account")
3. Open "savings account" transaction list (All dates)
4. Edit the last transaction (dated 30 mar 2004, Amount 121.96) and change destination count from "Cheque account" to "test account"
5. Go back to the main window: "test account" balance is still 0 (it should be 121.96).
6. Open "test account" transaction list: there are no transactions (there should be the one "symmetrical" to the one edited in step 3)
7. Open "Cheque account" transaction list: there is still the edited transaction (that should be have moved to the "test account")

Regards,