When you've made changes to a task, it can create a new tasks but keep the old task with a red 'delete' option in the middle of the task. It would be good to search all tasks available for deletion to review and delete these in bulk as they still show on task exports.
Hi Sarah, I am with you on this idea. For those using BM workflows, I would add to this the ability to transfer any workflows in progress attached to the 'old task' to the new task, otherwise users lose all their worfklows progress. See separate request BM-I-385