Data Import
This feature is intended for sites that often exceeds the payload limit of GA ( 8192 bytes per hit ).
This type of scenario can easily occur on sites where visitors often fill the cart with many different items (eg supermarkets, pharmacies, etc.), essential events, such as begin checkout or purchase events, will be discarded in GA without any warning or error.
Danger
Only enable this feature if you are really sure that your site is exceeding the payload limit.
When you enable this feature, some fields of product model ( name, variant, categories ) will be dropped on the payload, then on GA reports you'll see the (not set) values for commented fields unless you import the product data file on GA.
Warning
This feature is still under development. Some method to export the products into a valid GA file is pending.