You don't need to convert your OrCAD schematic to PCAD schematic as you can use your OrCAD netlist in the form of pcadnlt.dll and load it in your PCAD PCB as long as you sync your PCB library property in OrCAD schematic and the PCB type in your PCAD PCB.
I understand that I can do that, but I no longer use Orcad and would like to bring in the old schematics so I can modify them in PCAD and make changes to the boards in PCAD. Is it possible to bring in the Orcad Schematics?