I have a question on Super User that was closed as an exact duplicate. In my opinion this is in error, the other question is similar in that they both revolve around the presence or lack of the same feature however the two questions approach the feature from distinct use cases. At present the answer to the two questions IS the same, however in time, because their purposes differ, a third party solution could arrive to one or the other which does not solve both use cases. Having one queston closed prevents it being (potentially) answered.
Admittedly, in the initial versions of the question was not worded so the differences were apparent, so it was valid to close it. Now it has been revised so the differences are clear. Adding a comment or editing and old question doesn't get fresh eyes on it, no front page exposure. So what does one do? Ask a question like this here on meta? Ask the question anew with the better phrasing?
There is another meta question asking about this, Should there be an appeal process for Closed or Locked questions?, but the theme is quite different, being about appealing a closure in the milieu of flamewars and offtopic debates.