How to import and convert the OrCAD (allegro) GERBER to Altium PCB file? (reverse OrCAD GERBER to Altium PCB )?

When talking about gerber files, CAM editor will be of help to import netlist and tracks back to PCB design. There is nothing specific about OrCAD. I suppose you are talking about OrCAD Allegro PCB files, we were able to import them (we did not test if for every version, importer might not cope with latest files format) but you need an installation of Allegro (you need to run the format converter from binary to ASCII) and you still need a lot of manual editing (layer mapping may not be matching completely). You will find documentation here: https://www.altium.com/documentation/altium-designer/allegro-import Every time we had to import existing projects in Allegro we ended up with replacement of components in SCH and PCB, ad we just kept the tracks on the PCB. But in case you need just to edit a few tracks, the import option is still viable.

it woul be great to convert Orcad files. I had lot of problem to use those kind of ddesign format