There are 2 fields Σ Original estimate supported in Timeline and Gantt chart
Σ Original estimate (Jira)
Σ Original estimate (TeamBoard)
These fields are different in aggregation calculation of original estimate:
Σ Original estimate (Jira)
The aggregation original estimate in Jira is calculated by its self and its child tasks.
Σ Original estimate ( SP-6) = Original estimate SP-6 + Original Estimate SP-2 + Original estimate SP-1
Σ Original estimate (TeamBoard)
Σ Original estimate ( SP-6) = Original estimate SP-6 + Original Estimate SP-2 + Original estimate SP-1 + Original estimate SP-5 + Original estimate SP-5