Hi Tomas,
it is reasonable. ODB++ file should be imported into a PCB primitive Icepak object, while IDF can be imported directly. Here is a more detailed definition of IDF.
If you need more help regarding your sepecific files, please submit a service request and I'm happy to help you!
Best regards,
Joey
•Intermediate Data Format (IDF) – IDF 2.0 and IDF 3.0
‒Board File (.emn, .bdf) - data on board dimension and component positions.
‒Library File (.emp, .ldf)- data on component sizes, thermal and electrical properties.
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