Sometimes, but not always when I edit a sales invoice, it loses the tracking code and I have to put it back in again. This bug may occur for other forms as well. The problem seems to occur when I create a sales invoice item and allocate a tracking code to it. When in the sales invoice, I select the sales invoice item which then automatically puts in the the tax and tracking code. I then change to round to nearest.
When I save the invoice and edit it later I notice that the tracking code is blank.