Using TimeMachine backups after changing (short) username on OS X? I changed my (short) username on OS X Mountain Lion using the instructions mentioned here.

I am guessing that would sort of invalidate all the TimeMachine backups I had till now. Is there a way to fix that?
The tmutil inheritbackup command in Terminal will let you inherit a backup from a different disk or computer. However, I doubt that it will inherit files from a different user account. In other words, it might give you access to the backup, but not to the files in the account with a different name. It's worth trying though.