Merge two guides that answer the same question

Consolidate content while protecting useful material and navigation.
The scenario
Two articles explain the same calculation, but only one contains a useful explanation of refunds.
Combine the unique material into the page that best serves readers. Update navigation and redirect the retired address when the destination is a genuine replacement.
Apply it to your own work
List all internal and important external links first. Preserve examples, update anchors, and check the retired URL and replacement after release.
What to watch for
Do not redirect unrelated articles to the homepage. Keep a distinct page if it serves a different decision.
Make a preservation checklist before merging
Mark examples, citations, and diagrams unique to each page. Draft a combined page that answers the original question without burying the best explanation under repetitive introductions.
After the change, visit both URLs, confirm the retired address resolves to the relevant section or page, and update internal links. Check whether the merged article now serves two distinct intents poorly. If it does, preserve both pages with clearer scope.
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