I have configured JIRA to have Issue Type Screen Schemes which work well except for one thing. Changing issue types between issue types related to other screen schemes.
I have Epic, Story and generic issue type screen schemes. Changing issue types within the issue type screen schme is not a problem (e.g. Improvement to New Feature). But changing a Story to a New Feature is impossible. It just not be provided.
How to configure JIRA to make this possible without lose the benefit of issue type screen schemes?