I've had this come up a few times, and found some older answers to similar questions on meta.
However I believe that the answer heavily depends on the current moderator staff, as they are the ones handling these flags.
When I see an answer in the late answers queue, I check if the answer already exists.
If the answer has been directly copied word for word from another answer on the same question, I flag it as
in need of moderator intervention. As the other flags don't fit at all.
I then add a link to the original answer.
As I am getting both positive and negative feedback on this way of flagging, I would appreciate some clarification.
- Flag these
- Downvote them (seems counter-intuitive unless I also downvote the original)
- Ignore them (also seems counter-intuitive, they are not contributions, but bloat)