Hi,
i upgrade to presta 1.5.6.2 from 1.4.9.
My new orders don't have the numbers like 0001, 0002, .... .
Now it's BUGDHJ, HJHDGJ, .....
My big problem is, with the old orders, all products list in orders are disappear, it's an empty orders, only with the Total of order.
How can i resolve thi...