Hello Community,
My use case is trying to migrate Project from A to Account B, I found some answers in discussions saying go to Import/Export create backup and export.
Once it is exported go to B account and import the Zip that is downloaded, which will get all the Project back in B account.
In the above process everything was successful I am able to see project and People etc, when I am trying to load a board I am seeing below screenshot without reason.

All the tickets are created in Account A are not populating and showing above error.
Please let me know what could be the issue.