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What does the report say, in short?
PASS: attaches and behaves. WARN: attaches, but one fact is worth a look. BROKEN: the app accepts it, but the edit will be wrong.
BLOCKED: the app will refuse it (a new render or a rename is needed). UNREADABLE: the proxy file itself is damaged. MISSING: no proxy for that original. ORPHAN: a proxy with no original.
Each card explains the exact reason in plain words — start there before re-rendering anything.