We have a jira instance where they kind of went nuts in the past creating subtask types. For simplicity, I want to move a lot of those back to just "sub-task" and delete the extraneous types. However, when using bulk move, you have to choose a new subtask type for each individual issue; if you don't, and just check the box to use this same project and issue type pair for everything, then it also changes the parents of all the subtasks to the parent of your initial issue, which is ludicrous behavior. Is there a plugin or anything that allows you to change the subtask type en masse without changing the parents?