lower the total instead of burning down in the burndown chart
when you remove a task from an iteration or sprint, i think it should lower the whole chart rather than suggesting that you have completed the task. this is misleading under analysis.
I agree. Currently, if you move a PBI from a sprint back to the backlog, the remaining work associated to the PBI's tasks drops off from the burndown, which gives the appearance that the tasks were completed. Instead, the whole burndown should shift downward.
For example, the sprint started with 300 hours of work. Currently there are 100 hours remaining. If I remove a PBI that has a 100 hour task tied to it, the burndown will slope down to 0 and the starting point will remain at 300. Really, the starting point should shift to 200 an the burndown should already be at 0.