The job ticket definition can be changed in the [Product & order editor]. If you want to remove [Job ticket items] that are no longer in the definition you can use this procedure.
Click [Remove unused regions].
All [Job ticket items] that are not in the definition will be removed from theCostSheet .
For each removed [Job ticket item]:
Remove the cells of the result table from the calculations that used the [Job ticket item].
Remove the [Job ticket item] from the result table.