I have had a MacBook Pro for over a year now that I have been backing up via Time Machine to a 1TB external drive. I recently bought a Time Capsule to start backing up the computer wirelessly at home. Unfortunately, I also spend long periods of time away from home when i'd like to continue to backup to the external. However, after trying to copy my existing backups from the 1TB to the Time Capsule, I learned that it is going to take a ridiculously long amount of time to complete the transfer from the 1TB to the Time Capsule and back everytime I leave home. So then I thought maybe I could plug the external drive into the Time Capsule via USB and backup to the same drive, just doing so wirelessly as a shared drive whenever I am home. But when I tried to do so, Time Machine didn't recognize my existing backup and tried to start from scratch. Is there any way to get Time Machine to recognize the old backups on the same drive when shared via the Time Capsule? Thanks!