Show/Hide subtotal and Grand Total in saved .rdl

Hi all,

I'm newbie for SSRS, Kindly clarify my doubt ,I didn't get clear picture about the below scenario.

Scenario:

Report Builder-> New->Table or Matrix wizard and proceed to "choose the layout" screen

I choose "Show subtotal and Grand Total" option and created the .rdl file and saved

In future I prefers to remove "subtotal and Grand Totals" from the saved.rdl file.  Is there any possibility to remove / revert the "Show subtotal and Grand Total" option in the saved .rdl file else i have to create a new .rdl file without checking the "subtotal and Grand" option.

The vice versa scenario of about said is possible (adding the Show subtotal and Grand Total later in a saved .rdl file)?

Thanks in advance