To remove the incomplete check mark from grades after they have been review follow these steps 
  1. Go to Approval from onRecord
  2. Choose Grades from the drop down 
  3. Uncheck the Review boxes for the class
  4. Now while still in onRecord go to Procedures 
  5. Choose Grades from the drop down
  6. Choose Record Grades
  7. This will allow you to uncheck the review boxes which will in turn now allow you to uncheck Incomplete and recalculate the grades for the student