link mappings field containing linked work items

Aug 20, 2012 at 12:55 AM

When attempting to use this tool to go from on-premise tfs10 agile 5.0 project work items to cloud tfs12 scrum 2.0 project work items i'm finding that the link mappings | field containing linked work item ids only has work item type | issue | reason choices in the drop down.  

It doesn't seem like any of these fields would be the ones to contain the linked work items data.  

Any pointers to what field contains test case work item link for User Story, Bug and Test Case?