Minor problem but it's driving me nuts. When I go to Twitter.com and try to log in, both my correct username and password pops up as a log-in option as well as an old username and password that both isn't valid and isn't saved either in my iCloud Keychain or my local Keychain. Where else could this phantom username and password be coming from? Could it be a relic of when Twitter was integrated into the MacOS? If so, where would this be saved locally, so I can delete it? Any other places I should look? Thanks.