I created a large number of issues in the backlog each under their respective epic. I generated a roadmap and a plan where I can see the issues. I also updated workflows and created separate teams. Once this was complete I went back to backlogs and now all of my issues are gone, and each epic says it has 0 issues. When I go to the roadmap the issues are still there. No matter how I try and reset filters, I never see any of the issues I created in the backlog.