When using per-period metrics, if the type is Duration, the Total Row displays 0 if the amount of periods selected is outside the Cost Plan boundaries.
STEPS TO REPRODUCE:
Note the cost plan row shows the value per period and the Total row shows the total value
Note the Total Row
Note the Totals row
Expected Results: The Total Row displays the total value
Actual results: The Total Row displays 0
Workaround: Until DE77596 is fixed, adjust the view to display periods within the boundaries of the Cost Plan Dates.