I have an external hard drive which I normally use for time machine backups. I have connected it by USB it to my parents' time capsule, and I am able to enter time machine and view my past backups, but when I try and back up, it starts creating an initial ~200GB backup instead of an incremental backup of just a few MB. Is what I am trying to do - connect an external drive, which was initially set up to back up over USB, to a time capsule and use it to back up wirelessly - even possible? Has anyone seen this before or have any ideas for things to try? Any help is much appreciated.