We have tested submitting an order with utm parameters on the url of the order form. We expected the utm parameters to be stored somewhere along with the order (similar to how regular form capture saves this information) so when we pull the order data from GHL into our reporting environment via API we would have access to these utm parameters in context of the order. It doesnt appear these parameters are saved anywhere. This feature would make GoHighLevel Checkouts substantially more competitive to alternative checkouts like SamCart, especially for businesses with complex attribution model needs.