If you just changed Status/Stateto Deleted , you can create a new query and search for deleted work items.
Go to the "My Queries" section, right-click → "New Query", configure the last item in "Status" = "Deleted" and click "Run"
From the query results you can open the task and change the status / state to the corresponding status / state
, - ,
a >
Task , Task.xml,
C:\Program Files (x86)\Microsoft\Microsoft Visual Studio Scrum 1.0\Process Template\WorkItem Tracking\TypeDefinitions
<TRANSITION/>, <TRANSITIONS/>
<TRANSITION from="Removed" to="To Do">
<REASONS>
<DEFAULTREASON value="Added back into the backlog" />
</REASONS>
</TRANSITION>
TFS Power Tools. Scrum Task
, .