It may have been a known issue, but it wasn't known by me. I didn't know the possibility existed. A mail delivered, during the boost, explaining the situation with the equipment would work. A note in the extractor's description would work also. 'removes any upgrade from any piece of equipment without destroying the upgrade or the equipment. note: the upgrade extractor will not work on equipment provided by the level 80 character boost.' I mean currently the extractor does say it works on any equipment, and lists no caveats.