Comment 4 for bug 639807

Ok, I had the correct db now. The exchange rate difference correction is correct except for the error reported in https://bugs.launchpad.net/bigconsulting/+bug/644220 (foreign currency amount has to be 0.00 for the correctional move lines, see att. 1). The computed ending balance when confirming the statement is still incorrect (att. 2). It's off by 22612 USD although this is not a cash discount invoice. Finally, the invoice did not get reconciled, only partially (att. 3).