Hi, try to change type to Data, add customer_address.state to Fetch From field and keep Address in Options field. But not sure if it works with v4, I’m using v12.
If there is no fetch from field in V4, you can call AJAX to set the value of State, just set the field_type of State to Data and for reference see follow,
You have to reselect the value of Customer Address to trigger this AJAX.
Just put this code in the Custom Script of Sales Order.