I use a program called Cad2Cad to convert the data for our Opals. It was given to me by the Assembleon sales rep when we were shopping machines. It was free at the time but I'm not sure if you have to be under contract to get it from them now. I take the .txt output from Altium and strip out what I don't need in Excel and then save it as a .csv for import into Cad2Cad.
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