I have a couple of projects, configured a "Classic software". Each project has a board (i know a board is not per connected to a project) and it's own backlog. Now the issue is that the backlogs some sort of seem to have connected: i see sprints that are made in the backlog of Project X on the backlog of project Y; although they both only have issues that are in the project they're in. But, when renaming one of these sprints (either in Project X or Y), it is changed in the other backlog as well. How do i disentangle this?