One way you can do this is to do a find and replace on a sequence file (make sure you have Hidden Properties Visible). TestStand stores all of this information in a property, and you could selectively change the value to be something else.
For your example, you would:
1) Select Edit >> Find
2) Search for "TS.NoResult".
3) Select the steps you wish to change the Result Collection Option to.
4) Type either "True" or "False" in the "Replace With" text.
5) Click "Replace Value".
Hope this helps!
Allen P.
NI