Hi,
If Story is small enough we estimate it, but if it is too big, we split it to Task (we do not use sub-tasks) and estimate Tasks. How can I easily know/show that this task is for specific Story? It is sometimes problem when we have the very similar tasks (or even the same) for 2 different Stories. Also I think that backlogs (Sprint and Product) would be much more tidy and readable. Can You help mi with this? Any ideas?