POWER PIVOT Running total graph breaks?

Question

Hi, Microsoft. Need help in figuring this out. The above screenshot is the graph I made using PowerPivot and DAX formula. For reference, here's the formula:

=CALCULATE(COUNTA(Actual[Actual - M4]),FILTER(ALLSELECTED(DataDateM4[Date]),ISONORAFTER(DataDateM4[Date],MAXA(Actual[Actual - M4]),desc)))

here's the Pivot Table as well:

The yellow ones are what cause the breakage in the graph. Can you help me figure out the right DAX formula? Thank you