While the most common workflow is to suspend a job, change its settings, and then re-activate the job, restarting a job is another possibility. Re-activating a suspended job picks up processing from where it left off. That is, tasks already completed are not re-done. In contrast, restarting a job halts all processing for the job, clears the server of all job-related temporary files (including completed tasks), and restarts the job from its first task. It is identical to resubmitting the job from the creative application, without the need for that application to be running.
The selected job is restarted from the beginning. If another job is already being processed, the selected job becomes pending.