Trying to use one Board for multiple projects

[Rui Nian]

I spent the last 3 hours Googling this issue but it seems like all info is either outdated or doesnt work.

I have many projects (10+).  I want to have one sprint board to manage all projects.  I created a general Board in my "General" project.  Now, I am trying to move the backlogged tasks into the General project board.  On clicking a task from another project, I see I can allocate it to a particular sprint in a different project. 

I did this, the column "Sprint" now says the proper sprint.  But when I navigate to the sprint board, the task is not visible.  Wondering how I can solve this.

[Nic Brough -Adaptavist-]

You need the global permission for "bulk edit", and you will need the permissions to do what you're trying in the project (e.g. if you want to bulk edit 30 issues in 3 projects and update a field, you will need edit permission in all three projects)