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In any case, it is always good idea to check the import log for any warning and error messages. I would also recommend to carefully review the model once imported to the lower version.
How can I validate IFC file to make sure that it is valid prior to importing it to CSI programs?
You can try to first open the IFC file in one of the IFC viewers listed at the [iai-tech.org] website. We had a good experience with using the free [CAD-DDS viewer].