so i have an external HDD which i am currently using with time machine to back up my files by connecting the hard drive to my computers usb I want to start backing up wirelessly by connectin the HDD to my newly acquired AEBS so my question; can i use my current time machine backup file when i connect the HDD to AEBS and point time machine to use that drive? or will i have to start all over and do the initial backup from scratch? if i can use my current file whats the process? because once i connect the HDD to AEBS its like its a totally different drive and i cant see files that were added when it was connected as USB. Thanks in advance and fyi i have a WD passport 250gb drive.