cadstar to orcad
The reverse direction is supported by Orcad Layoutplus, you should ask Zuken, if they can do similar, most likely not.
Generally a translation would start with exporting a MAX ASCII format at Orcad side. An isue in layout data translation can be in the different representation of routed connections, they may either use a star toplogy (most common) or multiple point-to-point (has been the traditional Cadstar approach, a least with previous versions).