I am sure this is reported 100's of times before, but I am trying to do a PHL-FCO trip for the parents and get a list of flights -- plenty of outbound flight possible for 200K. Then the return flight does not show. I revise the return date, and then it shows nothing on the outbound at all. I have tried this multiple times and various combinations. Sometimes I get choices for out but no return, sometimes both, sometimes nothing.... VERY VERY FRUSTRATING.

Update -
Called the Platinum reservations line, took 10 minutes got everything done. His response was "yeah, sometimes [the online award engine] is a bear".