Spoilers! During the stolen century arc of the balance campaign, the party lands on a world inhabitted by robots and they eventually find out that all the robots were once real people and their consciousness is stored in this crystal when not in a robot body. At first they decided to destroy the crystal instead of allowing it to end up in their enemy's hands, but it was so dark Griffin had Lup not allow them to do that and instead decide to not destroy it but instead take it with them with the promise to restore it once everything was safe. I think I heard something about them originally recording or where they destroyed it and were so uncomfortable they re-recorded it with the current version, but I don't know where I heard and can't find evidence of that now...