Using PB 2017 R3 build 1915

I have a datawindow that has a row of data unintentionally embedded in it in. Using 'edit text' on the datawindow I see a data entry immediately after the stored procedure reference. It prevents the normal retrieval behaviour of the datawindow so that it just shows the embedded row. I have deleted it from the dw definition using 'edit text' but I would like to know:

1. How did it get there?

2. What's the proper way of removing it?

example below (edited):

 procedure="1 execute dbo.usp_write_report;1 " )
data("060289","88867 ","126201",null null null null null null null null  1,"USA", 0,)
group(...

Thank you,

William Hicks.