Customization on Task Board In Team Foundation Server not reflecting

Hi so we are currently exploring Team Foundation server 2015 on-premise as part of our DevOps process.

Currently I'm trying out customization of the task board to add a "Pull Request" column/state in the board.

Steps ive done so far:

Exported the Task.xml file from the project "Wittest" in the Demoprojectcollection

witadmin exportwitd /collection:http://192.168.123.456:8080/tfs/DEMOPROJECTCOLLECTION /p:"Wittest" /n:Task /f:Task.xml

Modified xml to add the Code Review State

<STATE value="Pull Request">
          <FIELDS>
            <FIELD refname="Microsoft.VSTS.Common.ClosedDate">
              <EMPTY />
            </FIELD>
          </FIELDS>
        </STATE>

Added transitions for the new state
Uploaded the updated file using with admin again

witadmin importwitd /collection:http://192.168.123.456:8080/tfs/DEMOPROJECTCOLLECTION /p:"Wittest" /f:Task.xml

Check the board but columns stayed the same 3 columns "To Do" "In Progress" "Done"
Exported the Task.xml again and saw the xml was updated but I am unsure why I does not reflect the changes in the board though.

Would really appreciate the nudge to the right direction for this please

Solution

After adding the state in the task work item type, you also need to modify the process configuration file.

Try to use witadmin exportprocessconfig/importprocessconfig command to import and export process configuration, and add the pull request state in the TaskBacklog:

<TaskBacklog category="Microsoft.TaskCategory" parent="Microsoft.RequirementCategory" pluralName="Tasks" singularName="Task" workItemCountLimit="1000">
    <AddPanel>
      <Fields>
        <Field refname="System.Title" />
      </Fields>
    </AddPanel>
    <Columns>
      <Column width="400" refname="System.Title" />
      <Column width="100" refname="System.State" />
      <Column width="100" refname="System.AssignedTo" />
      <Column width="50" refname="Microsoft.VSTS.Scheduling.RemainingWork" />
    </Columns>
    <States>
      <State type="Proposed" value="To Do" />
      <State type="InProgress" value="In Progress" />
      <State type="InProgress" value="Pull Request" />
      <State type="Complete" value="Done" />
    </States>
  </TaskBacklog>

I've tested on my side, it's working: