I don't think this is a feature currently supported in Adium but is there is a way to add multiple contacts from a contact list to an account simultaneouslly? If it is possible and I've somehow missed it or if there is a workaround solution I'd love to hear it! Currently it appears that I have to manually double click on each person in my chat history, press command-D to open a chat window, press return twice, then command-W to close the chat window again... This will get pretty tiresome pretty quickly if you have a lot of contacts to add, like for instance adding everyone in your chat transcript history (which could be hundreds) to a new MSN account.
If there's no way then maybe it's a feature the devs could consider adding if it wasn't too difficult
