Duplicates where the newer question is the more valuable one
14629
Should I vote to close a duplicate question, even though it's much newer, and has more up to date answers?
147792
Is it okay to copy-paste answers from other questions?
31940
Add an alert when answering a question that has at least a close vote as duplicate
15326
Duplicate explanation should encourage improvement of original
104491
Single question thread with multiple questions, some duplicates
81134
What decides what to prepend the duplicate question list with on a duplicate question?
31470
Why was this question closed as a duplicate and not as unclear what you're asking?
152605
Duplicate Low Quality Post in First Post & Late Answer - Double Flag?
133926
What if 2 answers are essentially the same?
87154
What to do if an out of date question+answers already exists?
19629
Where is it preferred to place the answer to duplicate questions?
138119
Duplicate question close reason says "already has an answer," which is often false
115725
Strategy for dealing with "which is faster?" questions
27594
Should you gain rep for asking a duplicate question?
10293
How should duplicate questions be handled?
35162
Duplicate questions without answers
32806
Why are "Questions that may already have your answer" search results better than the actual search results?