It appears that the built-in "Course total" calculation box in 1.9.3 does not (in some but not all cases?) update when a change is made and submitted; I'm having the same problem (with an entirely different term) tonight. What I'm doing as a workaround is hiding the "Course total" item and adding a new grade item to correctly calculate the total.
Jim
Gradebook
Course Total Calculation Error in the form of ##gi6887##
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