I've just upgraded from 2.8 to 3.1.
In 2.8, I enabled HTML in the Description field and added some shopping code for each product. I was able to view and edit the code by selecting the Edit Product link for each product.
Now, after upgrading to 3.1, all I can see is the line <br clear="all">, which is part of the original code - but that is the only line.
I've checked the database tables and the original code is there in the Description field, but I cannot edit it through ReviewPost.
I've also checked my Admin options and Allow HTML in Product Fields? is set to No. Changing it to Yes, however, stops the shopping code from working at all!
Example of the shopping code working here: http://www.photographyblog.com/revie...&cat=14&page=1