Keith z,
If not mistaken, the version 4.0.27+ discussed at this post: http://www.zen-cart.com/showthread.p...74#post1263574
Offers the capability to export the uri of the product. By default (after installation of EP4) this option is actually turned off. The product_uri_1 field you are seeing is the uri field at the bottom of a product entry form that would be displayed near the product when the product page is shown. It is not the uri that the browser displays say from the categories section to get to the product. Further the number 1 at the end identifies which language version of the field is being displayed. The product_uri field is available in multiple languages depending on what is installed to the cart.

So, to export the uri that is found in the browser when navigating to a product, would need to go to the admin's configuration for EP4 and turn the switch on ('Export URI with Prod and or Cat') that relates to displaying the product's uri. :) This option should be the last in the list of configuration options for EP4.