Payment Cash clearing accounting is separate by invoice date

We have a differents invoice with a different invoice date, but only exist a one payment.

Example:

Invoice 1: 01/02/2013 with amount of $2.00

Invoice 2: 01/02/2013 with amount of $3.00

Invoice 3: 02/02/2013 with amount of $1.00

Invoice 4: 03/02/2013 with amount of $4.00

Invoice 5: 03/02/2013 with amount of $6.00

The payment is created on 05/02/2013 for $16.00 amount.

In the accounting show three lines for the cash clearing account

Cash Clearing for $10.00

Cash Clearing for $5.00

Cash Clearing for $1.00

And the correct is show only one line for %16.00 for Cash Clearing Account.

Why not show this only line for Cash Clearing Account and How i can resolved this issue?

Thanks.