Hi @Woodhope,
Would love to see if the community has more insights on this, but I wanted to briefly chime in and offer some input on how the two Added to Cart events differ.
The legacy Added to Cart event works much like Active on Site and Viewed Product tracking, in the sense that it tracks the activity of cookied users. That means that if somebody fills out a Klaviyo form or clicks a Klaviyo email and onto your website, they’re “cookied”, and we can track their Added to Cart activity. Shopify can’t do this by themselves, so if you have a site visitor who adds to their cart who Klaviyo has identified, but Shopify hasn’t, they would record the legacy Added to Cart event, but not the Shopify event.
The Shopify Added to Cart event is useful for capturing Added to Cart events for site visitors that have Shopify profiles, but aren’t cookied in Klaviyo. For example, if somebody logs into their Shopify account, then adds to cart, the Shopify event will track, while the legacy event will not.
All in all, both types of the event have their uses, and if you have the snippet for the legacy Add to Cart event still installed on their site, this event will continue to work.
