Hello,
I'm working with a third-party fulfillment backend app and we are facing issues with upsell orders.
According to this documentation Shopify Upsell Orders, upsell orders will have the fulfillable_quantity of 0 and the fulfillment_status will be on_hold, also says that FulfillmentOrders is the source of truth and its status will be on_hold, however, we are seeing a bunch of upselling orders that do not match any of those criteria.
We want an assured way to identify upsell orders because we want to skip them until they get finished.
