Overall Results doesn't match the detailed drill down
When drilling down my sales report by 0CALYEAR or 0CALQURTER, I get 620 in the Overall Result row.
When drilling down the same report by months (0CALMONTH), I get the summation of 640, which is the correct sum.
The properties definition of the KF for result calculation is "nothing defined".
There are no unassigned values of 0CALYEAR or 0CALQURTER in these sales records.
What might be the reason for this mismatch between the rows and the Overall result row?