Roadmap is not working - change main board

[Tools BossaBox]

Hello, 

My roadmap is not working more, I cant see the sprints and how long time witch issue delay to finish. 

My sprint have dates, that's why Its not the problem.

I created other board and deleted the first board that It was created when you create a project. I think this is the problema, but I dont know how to recuperate or how I put other board as the main, could you help me?

Thanks!

[Airbus Driver]

The roadmap will only display sprints if the sprint was created on the same board as the roadmap. If you created a sprint on another board, you will not see the timeline for the sprint on a roadmap of a different board.

In order to recuperate issues from the older board, do you remember the board filter? If so, you can just modify the board filter of the new board.