I've read a workaround to link in Portfolio and Next-Gen Epic issues, but this is simply not working well. The quote is "Go to Portfolio's hierarchy configuration and map the Epic issue types coming from next-gen projects to the Epic level so Portfolio will properly recognise them."
When I attempt to edit the hierarchy and add the Epic level from the Next-Gen project, it then becomes "above" the Standard Epic and messes up my plans.
Can someone please explain how to link in the Next-Gen Epics properly?