Say we have a case where an individual story is revealed in practice to have much more complexity than originally conceived. Can the subtasks be moved / broken-out independently to the backlog so that the original story may be reformulated as its own sprint goal or epic?
It seems to me that in such a case, one shouldn't have to manually recreate each subtask as a story. However, the previous answers [which are old ~2013] I've seen that deal with similar questions seem to indicate that this breaking-out can't be done [without attaching the subtasks to a new parent].
Any guidance = much appreciated. Thanks!