report designer

I am trying to add the vendor names to a report in job cost that sow Estimates, Total Committed, JTD Cost, and Unbilled Commitments.  I added JC Transaction to my Indexes in Field List.  Then I chose Description and added to report.  I do get the Job Name and Vendor that way as that is how I enter the Description in AP.  My problem is that it only prints for one cost code now.    I must be positioning description  wrong on the report?