Nokia :: E51 - All Contacts On Lost - Using ISync

I was trying to back up my contacts from my Nokia E51, but something went wrong and they are now missing.

Here is what I did:

I downloaded the Nokia E51 iSync plugin found on this page after selecting E51: http://europe.nokia.com/support/product-support/isync/compatibility-and-download.I made sure iSync.app was not running and installed the plugin.I created a group in Address Book.app called Nokia, into which I was going to back up my contacts.I started iSync and added my mobile device. I chose to sync Contacts into the Nokia group, but decided not to sync the CalendarI chose to merge data (not to erase the device details first, which is another option)When I clicked sync I saw a message on the phone stating "Sending 315 contacts", and a little while later, "Receiving 315 contacts." Finally, a "Sync complete" (or something similar) appeared.

After this, I was a little more than shocked to find both the Nokia group within Address Book.app empty, as well as the contacts list on the phone it self. In pure desperation, I restarted the phone, but still - all my contacts are missing.

I know that the webpage says that one should backup all details before synchronizing - which in itself is somewhat of a chicken and egg problem. Backing up is exactly what I was trying to do.

Does anyone have any pointers or ides that I could try to get back the (potentially, hopefully) lost data? I haven't written anything back to the contacts list, is there a way to reconstruct (parts of) the contacts list by reading the memory directly (similar to how deleted files can sometimes be recovered if they haven't been written over)?