Why are changes that I made to the Result Format not appearing in webBook? (wB)
You most likely haven't 'Validated' the Result Format.
This is achieved using program Academic Reporting > Setup Information > Assessment Setup on the 'Result Formats' tab.
Select your Report Type
Set Codes are defined in Academic Reporting > Setup Information > Assessment Setup on the 'Result Periods' tab
Click 'GO'.
Click 'Validate' at the top of the screen.