Advanced Roadmaps - Group by of Initiatives do not show hierarchy below

[Uiliam Mazzardo Veloso]

I have an Issue Type Hierarchy configured as following:

1. Initiative

2. Epic

3. Standard Issues

4. Sub-tasks

I also configured a custom field to "categorize objetive" of an "Initiative".

When I "group by" this custom field in Advanced Roadmaps, the hierarchy below initiative do not appear where I would expect, as we can see in the following image:

I would expect to see:

1. Objective Category

2. Initiative

3. Epic

4. Standard Issues

5. Sub-tasks

How can I achieve that?

I have to apply the same custom field to all issues below the Initiative? If yes, how can I manage it? Manually?