I just upgrade the website from 1.3.8 to 1.3.9h. Got a problem. The paypal transaction details does not include the attribute of the purchased item. But it was working before. This is pretty annoying since we are use the paypal receipt to ship the orders.

I have another website. It's almost a new site with 1.3.9h installed. It has the same problem.

I modified the shopping cart page to display the model number. I don't know if this is the problem. Please help.