this was another one of my to-do projects, but Annabell beat me to the punch. also, rather than a separate page, she included it on the page for the Mylarai Build Extractor:
http://galaxylegion.com/wiki/index.php/ ... _Extractori contributed a list of upgraded artifacts which revert back to their original form, as well as artifacts that keep their upgraded status after extraction.
please let us know of any other artifacts that are missing from the lists.