The Distributor and Studio fields have an arrow which would indicate you could select a value from a drop down display of the proper table. You can not, it just yields a blank. It would be great to be able to select an existing entry and not have many near duplicates from spelling or exact word match differences.
From memory, previous versions had a drop down list of previously entered Studios. However, this has disappeared in version 8, but it would be good to have it back.