Probably a stupid question, but I transferred all of my documents, itunes and photos onto an external hard drive. I now want to empty those folders on my c drive and store them just on my external drive. When I tell the coputer to back-up in the future onto the external drive, will the content in My Documents, My Music and My Pictures on the external drive be deleted (replaced by the new, emptier folders?) I need to make sure before I delete anything off my C drive