Thanks for contacting me. If you are evaluating ACE, I would recommend trying our primary product FAB 3000. It's specifically built for PCB related formats (like ODB++, etc.) and has the ability to import DXF. Here's a tutorial showing how to import 3 different DXF files into FAB 3000 and then export as one ODB++ file.
https://numericalinnovations.freshdesk.com/support/discussions/topics/14000003458
If not and you wish to use ACE, what tool are you using to view the data within the converted ODB++? A good test is to use the free ODB++ Alliance Viewer to verify ODB++ files. https://www.odb-sa.com/resources/odb-viewer/
Thanks again, and please let me know your results.
Best regards,
Simon
Simon Garrison
When the dxf has been converted, my other software cannot find the data within the converted ODB++ folder. Also I do not see an option to convert dxf to an ASCII file. Can this be done?