I have gone straight to the job cost record, copy paste change values to - , then save , then, recall, copy paste to the correct job, be sure to remove the - and save. This corrects the job records with out having to mess with payroll.

To get the correct job cost records print job cost journal 6-1-2 and select job and limit source to payroll, hit f5 in source field.

Other options if wages are different such as a prevailing wage job vs non prevailing wage, is enter the hours that need to be removed from the job as - values first in payroll record, then enter the correct hours and job information and proceed as normal with payroll.

Hope this is clear