Candy Cart automatically tags all the orders that include added upsell items. You are able to see this tag on the orders page of the Shopify admin.
This tag can be used to filter and sort orders with upsell items and differentiate them from the ones that do not have upsells added.
In case you are not willing to have the orders tagged, feel free to tell about it our support team via live chat or contact [email protected] and we will disable this feature.