I noticed it was possible to clear a list, in this case, my list of closed issues. I didn't want to clear the list, however, because I want to be able to easily go back to them should I need to. Although, today when logging into my Jira I noticed that half of the issues in that list have cleared, I don't know if this is a time-based thing, but I do not want that to happen. Is there any way I can disable it and/or restore the issues to the list.