In Scaled Agile Framework the hierarchy that is defined is Themes->Epics->Features->Stories. In JIRA we see Initiatives->Epics->Story. Why are they both different, when Scaled Agile Framework has been widely adopted?
When we tried to rename the "Epic" level to "Feature" and created a new level "Epic" above it; we see a challenge in removing Epic related labels under the new "Feature" level.

