Answer:
There is no need for the previous clarity on the backlog for the upcoming iterations because while doing iterations, all the previous backlogs are concerned by the team they just resolve it for the current iterations.
Explanation:
An agile way is used in almost organizations. Earlier we used the waterfall model which consists of the drawback that we can not rectify in the middle whenever we want but in an agile way we can rectify whenever we want and in any part of the process.