Right approach to move incomplete sub-tasks to the next sprint

[Smitha Joseph]

Which is the right approach to move incomplete sub-tasks to the next sprint?

Approach 1: Should I split the story into two parts (comprising the incomplete work), move the second part to the next sprint, and adjust the estimates of the original and split stories?

Approach 2: I have one parent story with, say, 6 sub-tasks. The estimates are at the sub-task level and add up to the total estimate of the parent story, keeping the estimate of the parent story at 0. The parent issue remains open until all sub-tasks are complete. If, in the current sprint, I complete only 4 sub-tasks, I move the remaining 2 incomplete sub-tasks to future sprints along with their estimates.