I don't or this is a bug. But people who update from 1.0 to 1.1 got still 1.0 in there order history layout. Ofcourse you can download the 1.1 version, it's only the layout.
I think it has to do with the order_table. It gets the information from the product table.
Yes we know. The order table copy the information from the product table after making an order. If you can make a how to it would be fine. But I don't thing you had to update your history order after making a order in the past.