Importing artifacts to maven with metadata intact

Hi, so we’re trying to migrate to nexus. However, having done various import trials, I cannot seem to find a way to set the metadata for the artifacts correctly. Specifically, when I query for the date of an artifact, it always reports the import time, not the creation time.

We have a repository dating back 10 years of artifacts, and losing all the date information would make for a bit of a mess.

I suspect this might be possible via some groovy code, but I’m not sure how. Google shows up little, and there’s no documentation I can find on the embedded OrientDB structure that probably drives this data.