How is it possible to get 1 visit with a purchased product without product pages viewed or loaded?

It is possible in your dataset to observe a visit with a purchased product, without getting any viewed or loaded product pages / product sheets.

This can be explained by the following behaviour:

1. An Internet user visits your site and adds a product to his basket, then leaves the site.

2. The next day, he returns to your site directly to the shopping cart (or at least, he does not visit any product pages/product files), then orders.

You will thus obtain in your dataset 1 purchased product, but 0 visits with products seen and consequently 0 loads with products seen.