I have created a new classic Nintex Form for a list with existing data in it. I needed to use the List Lookup Control to give users the ability to select info from lookup lists with dropdown menus. When I applied the form to the list, the form does not display the existing values in the fields to which the List Lookup controls are connected (single line of text fields).

Is there any way to force these controls to display the existing content from their target fields? Or am I going to have to manually go through hundreds of records, applying the required values to the list lookup controls in the form? Seems a bit of an oversight.