Is it possible to make M-Files Importer update documents without required properties?

Hello!

I have a case where M-Files Importer is used to updating the documents if their contents change. This is done by checking duplicates if there have been any changes. The metadata is not being updated since we want to preserve the original values. The csv-file thus has only the document ID:s, names  and sources.

However, the Importer gives an error about missing required properties with this setup. This is apparently caused by a few of the document metadata card's required properties that are not included in the csv-file.

The metadata property values don't have to be changed during the updates. Is there a way to bypass that error message or do I need to update the csv-file with the required properties?

Thanks!