I keep trying and failing to import a CSV file. The file contains about 150 new issues we want to add to an existing project. I've already imported wrong twice and overwritten over the top of good tickets. So frustrating. Instructions online only show how to deal with exceptions (special characters, multiple values, attachments, creating sub-tasks). I just need to know what should go in the Issue Key, Issue ID, Parent ID, Project Key fields. New sequential numbers? Do I leave them blank? JIRA wont let their customer call them and I cant get anyone on their support team to understand when I ask over email. So frustrated! Its 4am and I've been up all night trying to figure this out. Anyone have any advice for me? 