There is already a question Top Network Posts showing incorrect score which is posted around a month ago (which was fixed). My question reports a similar issue of showing inaccurate scores along with another bug.
A couple of answers in the Top Answers in my network profile are showing incorrect score.
As we can see they are showing a score of 10. But as of writing this question, the score of both the answers is 9. First answer about marriage and second answer about withdrawing weapon both have a score of 9 instead of 10.
Even though the current score is 9, both these answers reached a score of 10 a few months ago and I was awarded Nice Answer badge for both.
The vote was removed either when a user was removed or there was an unupvote. As far as I can tell, I don't remember an unupvote notification in the achievement box from these answers. My guess is the votes are removed when user accounts were deleted.
So, I suspect the score of answers in Top Network Posts is not updated either when there is an unupvote or a vote thrown away due to account deletion.
Is this the right reason why score is inaccurate? Can this be fixed?