Sub-Task visibility in Pie-Chart Report

[Susumu Sekiguchi]

Hi,

I would like to ask my question in this community.

We want to use Epic to sort our Jira issues with Pie-Chart Report and we are using Cloud host.

E.g. one of our projects to see issues divisions by the Pie-chart.

How do I do is at Reports ->Pie Chart Report:

I set "a project" and "Statistic Type" -field to "Epic Link" and Next button for the results.

In the results, there is a "None" sector and if I click it, I'll get a new window open, where a bunch of Sub-Tasks. Somehow they are orphan tasks in the pie-chart, even though I put check "Include sub-tasks" in parent task.

We want them to include in the parent task. Furthermore, include into their Epic and disappear "none" sector for the Pie-Chart. 

Could anyone help in this issue? Is my problem in my procedure or in the system?

Thanks!