In planning view, it is convenient to use stage to see the content of several sprints, but the problem we had previously is that we needed to think to update the topic stage to be the same as the sprint stage, which is reality is very rarely done.

So now what happen is that when a topic is added to a sprint, and if that sprint is associated to a stage. The same will be the topic. So you are always sure all topics in a stage sprint's are listed to belong to this stage.

You can use stage to list all topics to be done in a longer period of time as the sprint's.

Before that update : Moving a topic to a sprint that is associated to a stage had no effect on the topic stage

After the update: Moving a topic to a sprint that is associated to a stage also associate that topic to the same stage as the sprint