Are you using Build Datatable activity anywhere to create the table and using it?
If so please delete the default columns in BuildDatatable activity and give a try
The extra columns are in your datatable. Use Debug instead of Run. Set a Breakpoint on the next activity after your datatable is populated. Then when it stops at the Breakpoint you can look in the Locals tab to see the columns that are in the datatable. You’ll probably want to use a Filter Datatable activity to remove the unwanted columns.
Use Filter Datatable. Set the in and out DTs to the same datatable. Don’t configure the filter tab. Go to the second tab and set it to keep Document No., Status, and Attachment Found columns.