So, I've encountered this a few times and wanted to know a workaround. In this case, I'm trying to add a child profile via Disc ID for a TV series but I get the message: "Error, Smallville: The Final Season is already part of your Owned Collection." How do I add this? In the past I would have to go in and remove the Disc ID from the parent profile but that doesn't always work, so what am I missing?