Unprocessed tasks need more processing (deciding and deferring) so they will show up properly in your lists. They stay in your Unprocessed Tasks list until they are fully processed.
In Donedesk, your Unprocessed list is divided into two parts: Work Stream (for quick triaging and deciding) and Unscheduled (deferring). The Work Stream is pre-sorted—quick decisions appear in the Response Needed tab and communication appears in Unread. The Unscheduled list is a collection of tasks you’ve agreed to do but haven’d scheduled.
In simple terms, triage the Work Stream as it is, the way it suggests. Then finish fully processing tasks in Unscheduled.