Test Case Parameters not displayed in Parameters Column in Query

So I have test cases in TFS/MTM that use parameters. I ran a query on the test cases, and added the Parameters column. However, nothing is displayed in the Parameters column on test cases that I know have Parameters.

Additionally, when I add a clause to the query for the Parameters field, and enter a value of a parameter I know exists, no test cases appear in the query. 

Any ideas as to what might be going on here? Why can't I see the parameters on the test cases in the query column?

Thanks,

Scott