Originally Posted by Snapper57
Odd stuff happens when syncing - I got a message warning me that more than 5% of my contacts will change if I continue - actually the message indicated that it wanted to delete ALL 310 contacts, luckily i cancelled it before any damage was done - or so I thought! I re-synced and it seemed to work without any repeat of the message however, all new contacts since the last sync disappeared into thin air - Im soooooo pissed off, they were important . I now have little confidence in this process - Ive had the same correct settings throughout - and I have tried creating new contacts on my iPhone since and it now works ok - so the bug is random which makes it very dangerous indeed.
This is why I sometime sync to 2 machines, always with a backup.
Actually I think if you go into iTunes you could retrieve a backup file.