I'm having the same issue.  I have 6 vendors that exceeded the the $600 mark.  They are marked for 1099 tracking.  They all show up under contractors.  I selected Contract Labor for the 1099 match up (each contractor has a separate sub account under Contract Labor so the business owner can keep track of what each contractor gets paid).  Their names all show up in the list for 1099s.  But when I select next, no one shows up for the report.