Hi. We want to add an issue type level above epic to be used in Advanced Roadmaps. When I tried to update the hierarchy to add the new issue type above epic, I got a warning message that said "Moving or changing hierarchy levels of issue types will break existing parent links in all company-managed projects in your site. This change can't be reversed." The warning message noted 4 affected issues by this change but all are closed so we are not concerned about them. My question is - will this change cause issues for other issues besides those 4 issues the warning message noted or can I assume those are the only 4 impacted?