We had moved our stories from the next-gen board to classic board. All the stories appeared on the board initially. However yesterday somebody made a change to the existing board and assigned the Epic from the previous board to existing user stories. Now I am not able to see the story in the backlog. I am afraid if I delete the Epic on the active sprint I will lose all the stories.
When I run the filter I see the stories under the new Epic as expected but none of the stories show up in the new board backlog.