I created a Kanban board with issues. I then made a copy of this board because I wanted to keep the settings ie. workflow columns. I wanted different issues on the new board so I deleted the old issues which were copied over from the original board.
However, after doing this I have discovered the issues on both boards have now been deleted. I have been advised by my support desk the only way to get the issues back on the original board is from the backup. Is this correct?