Issues missing from the backlog (in classic) when moved from a next-gen project

Issue Summary

Tasks which have been moved from next-gen scrum to classic scrum project are not appearing in their classic scrum project backlog

Steps to Reproduce

On your next-gen scrum project

1. create a Task
2. associate the task with an Epic
3. move the Task from this next-gen scrum project to a classic scrum project
4. associate task from an Epic on the classic scrum project

Expected Results

"To Do" Tasks to appear on Backlog

Actual Results

Tasks are missing from Classic scrum project's backlog

Workaround

Contact Support