Originally Posted by lmcjipo
Google Sync seems to not work 100%. I sync my Blackberry Bold 9700 with my Google contacts using Google Sync for Blackberry and I will sometimes get very strange results. Sometimes on my Blackberry, I will see 2 or 3 repeated contacts and only 1 contact appears in my Google Contacts. When I delete these "duplicate" entries on my Blackberry and leave only 1 entry on my Blackberry, during the next synchronization, the contact is removed from my Google contacts as well as from my Blackberry (when I had kept 1 copy of the contact on my Blackberry).
make sure you do not have Mobile Backup turned on also.