Has anyone been able to figure this out yet? I'm having the same exact problem. I checked in reports, activity, and anywhere else I could possible think of. In the same vein, I have a couple contacts that were also updated. I would love to find out which email address were changed and which were already unsubscribed.
I'll manually do it for now using excel, but, like CristinaS said, it's going to be time consuming.
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