title: Sumary Field is Blank instead of showing Zero
body: <p>My formula field sums the report. For some of the rows it works correctly and either shows a number or zero. For other sections it doesn't count correctly and comes up blank.</p>
  
  <p>I have checked the details section and there are no null values. I should note that there are other parts of the report where this is displaying properly. How can I fix this?</p>