- See question on feed.
- "I've seen this question before…"
- Search for term.
- Expand question
Ato read it.
- "Not what I'm looking for…"
- Change search term and press enter.
- VTC is now applied to
A, the wrong question.
- Retract vote (since it's not accurate).
- Can no longer VTC.
You can only vote-to-close once on a question, and also only retract such a close-vote once. After that, you'll only be a spectator in the vote-to-close activity.
My typical "hunt for duplicate" approach is to use the main site to search for a duplicate. Once found I proceed to cast the vote-to-close rather than using the search-for-duplicate feature contained within the closure procedure. It avoids mishaps like you experienced.