A search for a specific issue with columns of Σ Original Estimate, Σ Remaining Estimate and Σ Time Spent will show Time Spent that is different from a manuall summation of the Σ Time Spent collumn in issue navigator for the same issue.
As an example for TEAMA-1234 the Σ Time Spent 175.5 hours but if I manually sum all rows in Issue Navigator the same TEAMA-1234 issue in the column Σ Time Spent the total is 125.5. This occurs for most of my issues I am trying to report on.
What I am trying to do is provide information to my team comparing estimated level of effort (Points) to Original Estimate to Time Spent for all tasks by issue by sprint.
I'm curious to know why my totals would be different using the Σ columns in different views. It is wreaking havoc on my reporting! ☺