We have added two new "Work Item Types" to the category Task, we wanted them to look and work exactly the same as a task but are used for "time boxs" tasks of different types.

This seems to be working fine, however the two new "Work Item Types" have additional parameters in there Presentation, I cannot see why this is happening and how to change the presentation for these new types.

In the "Editor Presentations" there is only 1 type for com.ibm.team.workitem.workItemType.task in the list so where the different presentations are coming from I don't know.