Re-opening an old question doesn't remove the notice about the question not being a duplicate
9026
"Possible duplicate" notice not removed after reopening question
125450
/admin/recently-self-deleted is not showing a self-deleted question
22831
Changes to "close as duplicate" (part deux)
101911
I do not get notified when the system adds a canned "possible duplicated" comment
51087
Remove votes to close question X as a duplicate of Y if question Y is closed as a duplicate of X
135709
Duplicate post notice missing the duplicate
112391
How should one respond to "duplicate answer" flags?
14839
Do not delete good duplicates!
117642
How to remove, and not just hide, a question
152813
No way to delete an answered question
142226
Why can we delete the duplicate link?
82565
How to reopen a question by a third party
65461
"Recently Active" linked questions updates incorrectly
44211
Duplicate notification for the same reputation event after editing question title
105072
Is it possible for an old question to get on the hot questions list?
33502
Remove Punctuation When Checking for Duplicate Titled Questions
138642
Should the "closed as duplicate" message be altered?