To copy a board from one project to another, click on the Board Settings icon (dotted menu) -> select Board Settings.
In the Manage Boards tab of the Project and Boards Settings panel go Copy / Move Board.
Choose Copy and select the project from the dropdown list to which the board should be copied.
In the Copy board settings you can choose which board’s attributes to be copied to the new project, e.g. if to copy all the tasks, the custom fields, to preserve the assignees, to preserve the links etc. Click on the Copy button to complete the action.
Note: You can use the Copy Board option to create a board template and copy it to different projects.
You can also move a board to another project. Select Move instead of Copy in the Copy / Move Board section of the Manage Boards tab.
Choose the project to which the board should be moved from the dropdown menu and click on the Move button.
When you click on Move, the system asks you if you want to share all custom fields assigned to this board with all the other projects. Confirm the action by clicking on Yes and the board will be moved to the chosen project. Click on No to stop the action.