I had this exact problem, the other day, to migrate a Cadstar design into Cadence allegro, wethought a possible migration route might be through OrCAD Layout, but theproblem is once you have a cadstar.pcb file you cannot back migrate this cadstarfile to an older version i.e. (DOS .cdi) We spoke to Zuken about this and thiswas pretty much their answer, so looks like we cannot use OrCAD Layout as amigration route for modern cadstar files. The migration route we are consideringis to reverse engineer the cadstar file into Allegro. We also spoke to Cadenceabout this, they have internal translators which take cadstar.pcb files toallegro, but this would be done under their serives division and might becostly. Im wondering if anyone knows of any other routes of translation for this to be done?StephenGrant-Davies - QuantumCad
update:
apparently there is a company called "Logic Swap" who have approached me which can do this as a service, not sure how successful they would be, but if I go down that route I will let you know the results.
Stephen Grant-Davies