View nested requirement as first level in the traceability report when filtering by key

Given the following use case:

• Parent requirement Issue with key XPTO-1
• child Requirement Issue XPTO-2, with XPTO-1 as parent

If I go to traceability report and filter by XPTO-2 the report should present XPTO-2 in the hierarchical view.
Currently it is not possible with non parent requirements, it does not work neither with the Epic Link relation and with the configured link in the issue type mapping page.