I have installed the book type on my Zen Cart 1.3.8 and am looking for a way to mass upload products. I have tried Easy Populate and while it does upload products (some information anyway) it will not allow you to create the book product type (a lot of posts on this issue). My question is can you change the product type in the database directly and have the information show up properly in the product configure template. (I have hacked around and found you cannot just change the products_type in the products table and have it work).

Any thoughts or experiences?

Thanks