Hi Mike! Several things might be going on here. First, erasing the current chat just clears the in-game chat for that session. To completely delete all entries permanently for an entire campaign requires clearing the Chat Archive . Different thing entirely. Based on your description, I'm not sure where duplicating the game comes into play, When you duplicate a game, you have the option of duplicating or skipping parts of the campaign. The Chat Archive is one of those parts. When duplicating, if you specifically disallow the duplicating of the chat archive it should not be present. If it is, you can delete it by following the directions linked above. If none of this is properly addressing the behavior you are experiencing, please post back with reproduction steps and I'll see if I can duplicate over here.