I'm using Altium designer Summer 2009 and I want to convert the Schematic to OrCad, Allegro, Cadance concept HDL Packaged Schematic files, Mentor Expedition, Mentor DxDesigner, Zuken.
U can use save as/save project as option.Go to File>save as/save project as and change "save as type" to whatever you want and save it.I hope this will be helpful to you.