I had the same issue and realised it was my own mistake - remember that you are importing from DAT04 in your "Data Hub" model to the DAT04 in the "Supply Chain" model - in your screen shot you are trying to import from the "Supply Chain" model into the the Supply Chain model which contains no data. Also check that the source (data hub model) and your target (supply chain model) have same dimensionality Hopefully that solves your issue
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