Yep, I've got the same notification bugging me too and I also don't want to do the back-up/delete/restore option except as last resort. I had a lot of trouble syncing my MacBook Pro with may Android phone and getting my phone, my Mac and Google all singing off the same hymn sheet. Having spent a lot of time on it and having had smooth sailing since, I'm very frustrated it all seems to be kicking off again.
Anyway, my question is this:
When I was having this issue previously, the error message was different. The alert message would ask you to select which of the two versions of the address card you wished to apply to all accounts (my previous problem was it would sync as per my instructions by each individual card and then a few days later forget it all...). So I was inwardly groaning when this message popped up again this week and, thinking it was the same thing, began selecting all the 'before' cards. I was about to sync when I stopped and looked at things more carefully and I;m glad I did.
THIS error message is slightly different as it seems to be providing the 'before' and 'after' just as information rather than a question for me to choose which version of the card is correct. In fact, as I write this, I'm remembering there was a third choice to 'merge' the two versions of the card if neither is 100% accurate.
This would be a useful option to have in this case. I wonder where it's gone...? Has anyone made the same choice I was about to, selected all the 'before' versions and then synced. If so, what happened?
Also, which program is actually creating the Sync Alert message? Is it Apple Address Book, Apple iSync or Google Contacts?