Klaviyo Reviews stuck on WooCommerce after migrating to Shopify - no review requests

Hi Gisela, 
Based on my review of our documentation, we do not have a supported self-service way to repoint Reviews from WooCommerce to Shopify while keeping the existing Reviews data intact.

Unfortunately, our documented migration process is to have Support/Reviews clear the old Reviews integration, reconnect Shopify, and re-import exported reviews; the clear deletes Reviews data, so it is not a non-destructive fix.

For your case, do not disconnect or reinstall the working Shopify marketing integration, and do not run a reviews reset if preserving the existing Reviews setup is a requirement. 

If you are on a paid account, I recommend creating a ticket with our Support team, then from there we can have our Reviews team evaluate the situona and confirm whether they can repair the reviews platform/order mapping non-destructively. If you are not on a paid account or cannot open a support ticket, please let me know and I will create this on your behalf with the appropriate details!

In the meantime, keep the Shopify review-request flow off or in Draft until Shopify orders produce valid Ready to Review events. Don’t enable collection from past orders as a workaround: that feature can generate retroactive requests, is one-time, and is limited to orders within 60 days and 1,000 orders.