Yesterday I decided to change the email for the newsletter for PPCG. However, not long after I had validated my email, the following had flooded my reputation inbox:

Now, note that I have been on Stack Overflow for three years and have earned all of these badges before.

Also, for some reason, it says I earned +3 rep in total yesterday, despite the fact that, in reality, I lost around 10.

Can anyone explain what on earth happened?

  • It isn't the first oddity with badge notifications: meta.stackexchange.com/questions/283748/…
    – rene
    Sep 4, 2016 at 8:21
  • @rene not related. This one here is result of account merge, in which case all the badges are re-calculated in the merge target. The bug is the merge, and only a dev can look into it though. Sep 4, 2016 at 11:18
  • @ShadowWizard yeah, I saw the differences, wasn't sure about the cause so that is why I brought it up.
    – rene
    Sep 4, 2016 at 11:33
  • @rene yeah... the merge is buggy in many aspects, always was, e.g. in the OP network profile, SO appears with 0 questions and 0 answers, even though they do have posts. Sep 4, 2016 at 11:36

1 Answer 1


That is result of account merge.

This old account of yours has been merged into your current account.

When accounts are merged, all the badges are "re-calculated", and those you deserve are awarded again, and that is what you saw. This is confirmed by animuson in this comment:

Account merges can reset all of your badges (which causes them to all be re-awarded)

  • That sounds about right, thanks!
    – Beta Decay
    Sep 4, 2016 at 11:38
  • @Beta no problem, so I take it that the merge was not accidental? (In such case I'll remove the last paragraph.) Sep 4, 2016 at 11:48
  • Well I can't see which account was merged with mine so I have no idea
    – Beta Decay
    Sep 4, 2016 at 11:49
  • @Beta you can still see it in Google Cache. Sep 4, 2016 at 11:50
  • I see. No that's not an accident
    – Beta Decay
    Sep 4, 2016 at 11:52

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