Thanks for the info. @sethcall we have several systems we could populate the external ID with (Salesforce, Shopify). We have strayed away from doing that since we are integrating multiple systems. We use email as our unique identifier since that will stick with the customer regardless of what system we are spinning up in the coming years (seems like we switch way too often 🙃). I think I am going to search for the customer by email and update the record if it is found or create a new one if no record exists.