You must change the states in Impediment.xml to the same states as in the Task work item, you also need to redo the transitions to copy the states and transitions from Task.xml to Impediment.xml
<STATES> <STATE value="To Do" /> <STATE value="In Progress" /> <STATE value="Done" /> </STATES>
Aditional you must add this type of work item to TaskCategory in Categories.xml
<CATEGORY refname="Microsoft.TaskCategory" name="Task Category"> <DEFAULTWORKITEMTYPE name="Task" /> <WORKITEMTYPE name="Impediment" /> </CATEGORY>
What all.
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