If a migration loses images and downloadable resources, start by preserving one representative example. It gives the investigation a concrete reference and makes the eventual correction easier to judge.
Find the likely cause
The URL inventory includes pages but not supporting assets.
Treat this as an explanation to verify against the actual work. Look at the input, the relevant decision, and the final result together. If the evidence does not support this diagnosis, investigate the mismatch before applying a convenient but unrelated fix.
Make the targeted correction
Map important assets and update references alongside page URLs.
A redirect plan should preserve the visitor's intended task when a URL moves or a useful equivalent replaces it.
Check that the repair worked
Open downloads and images from migrated pages after release.
Repeat the check on the final version that the reader or customer will encounter. An approved draft, a preview, and a published result can differ; the acceptance decision should concern the version people actually use.
Prevent the next related failure
A separate issue to watch for is this: old article URLs redirect to the homepage. Map valuable old URLs to relevant equivalents when they exist.
Monitor the useful outcome
Track broken destinations, redirect chains, and successful access to important migrated content.
Keep a short record of the original symptom, the evidence behind the diagnosis, and the result of the acceptance check. That record makes the solution reusable when the same condition appears again, without assuming that every superficially similar problem has the same cause.
Official reference for the platform or standard discussed: Google Search Central: site moves.