I'm relatively new to JIRA administration and workflow config, though I've worked in software project and process workflow for a number of years. The previous admin at my company configured all workflows and trained users that the initial assignee should never be changed, regardless of the status of the ticket or current responsible party. Instead, custom user fields are set to indicate the code reviewer, QA and internal UAT users, who work the ticket once it hits the appropriate status. The user remains the original assignee (generally, the dev) throughout the entire workflow cycle. I've spent hours reading the documentation and watching online videos, but haven't found any good argument in favor of this practice. Is there something I'm missing that would firmly support the rule that the assignee should never change, even when the current workflow step is another individual's responsibility?