I just learned the hard way that Backup Assistant only saves phone numbers with standard labels, and only 1 for each label. This means if you have a contact with 2 numbers labeled "mobile", backup assistant only saves the first. If you changed the second label to something non-standard, like "backup mobile" or "spouse's mobile", it will not be saved. If you have contacts labeled "voice" (all my imported Vcards were labeled "voice"), they will not be backed up. In my case, it only saved 1 of each number labeled mobile, home, or business and allowed me to believe all contacts were successfully backed up. Most of my contacts no longer have phone numbers associated with them (because these were labeled "voice" or had some custom tag). The rest have only some of the numbers they had previously. Do not count on this "service" for backing up your information.