I believe if you clear out the contacts in your 6682, mark of of your contacts on your E61 , and hit Options>Send>via Bluetooth to your 6682, then you could just open all of them as vcards on your 6682 and they should have all the correct information. It may take a while to open all of them, depending on how many you have, but it will work.
The sync will also work both ways, but you have to install it on the 6682 also. To do this, I believe you need to start the sync with the E61, which will send the sync app over to the 6682 before you transfer anything.