Hey Jeremy, 

This is a common limitation. By default, most woo commerce klaviyo integrationa don't pass custom product addon data unless it's mapped explicitly. 

What I suggest is to use a custom function via functions. php or a lightweight plugin to hook into the woo commerce_add_to_cart action and append the addon values to cart item meta, then make sure they are passed into klaviyo's started checkout and checkout abandoned events via a custom webhook or API call. It's a dev side tweak, but it ensures klaviyo gets full context. 

Hi ​@JeremyLloydFragraance ,

This is a common issue with some WooCommerce addon plugins — they don’t always pass custom option data into Klaviyo by default.

To fix it, you’ll likely need a developer to customize the event data being sent to Klaviyo. Specifically, the cart data needs to include the addon values when the “Started Checkout” event fires.

You can also check if your addon plugin has hooks or filters that let you include those values in the cart data.

That is a not a lot of task i can help you out with that. Hope that points you in the right direction!

Micheal