shortcode not working in booster orders export

hi,

I want to export all the orders, using the “booster export” plugin.
I can export custom fields I made, by using for example:
“shortcode order”> custom field > [wcj_order_checkout_field field_id=”billing_wcj_checkout_field_1″]

I can see the column “source” in woocommerce orders, so the utm_source shows correctly there.
However,
When I use your shortcode [utm_source] as a export field for the orders in “booster”, it does not show that shortcode value on the exported file.
I do not see the “custom fields” under each order.

How can I have this value exported, so all the orders, including “utm_source” are exported to excel with booster ?

Thanks