Upload Fields by UploadKit stores the URL of the uploaded file in the line item properties of the Shopify order.

You can include this URL in your order CSV or Excel export by using a formula like this in the Calculated Fields section:

search_attributes({{ line_items.properties }}, "Photo 1")

In the formula above, Photo 1 is the field name assigned to the line item property. Simply replace this part with the field name you've specified in the UploadKit app. You can repeat this formula to export additional line item properties.

Click here for more info about exporting individual line item properties.