To clear Crystal Ball data:
Select a cell or a range of cells that contains the Crystal Ball data to clear.
Select Define, then Clear [Data],
.If you select a range of cells with more than one kind of Crystal Ball data — for example, an assumption and a forecast — Crystal Ball prompts for which data type to clear.
Check the type or types to clear and click OK.
Crystal Ball clears the selected Crystal Ball data type (assumptions, decision variables, and forecast definitions) from each cell.