Altium schematic symbols (or Orcad 16.2 or earlier) for Cyclone V

I have tried downloading the Orcad symbols for cyclone V devices and converting them to Altium, but apparently the library format for Orcad changed at version 16.3 and the import tool does not recognize the files. (I have also tried to access the files with Orcad 16.2 and get similiar results)

Is there a way to convert these files to an earlier Orcad version?