When all else fails, remember that a Zotero citation is just a pointer. If the pointer is irreparably broken, you can still manually re-insert the citation. It's tedious, but it's faster than rewriting your bibliography from scratch.
For the remaining 10%—especially those with corrupted field codes or deleted items—the solution is discipline: maintain version control of your document, never delete sources mid-project, and always keep a "live" backup copy before unlinking. how to relink citations in zotero
Look for the Document Preferences dropdown (gear icon) or right-click inside any citation. Select "Relink Citations..." When all else fails, remember that a Zotero
Open your Word document. Click the Zotero tab in the ribbon. When all else fails