What is a redirect map?
A redirect map is a launch QA file that pairs every old URL with its final replacement URL, redirect status, priority, and verification result.
When it breaks
It breaks when old URLs point to the homepage, temporary redirects, redirect chains, loops, deleted pages without a plan, or targets whose canonical tags point somewhere else.
Inspect first
Inspect the old URL export, final status code, redirect hop count, target canonical, sitemap inclusion, and internal links before launch.