That is because the DT has maintained its parametricness to the model.
If you just want to show a table and don't care about it being parametric
either save the DT out as an Excel spread sheet then insert that through
insert> object or create a general table and manually add the info.
Add an extra ROW in the DT with the column headings you need. Hide the row which says ID@Sketch1, etc. and then insert the DT selecting only the required columns.