Locate the origin of the incorrect information
A track title stored inside an audio file and an artist biography obtained from an information provider are different inputs. Kodi’s music manual separates scanning files from scraping artists and albums. For an invented example, correcting a song’s embedded album tag calls for a tag scan; finding an updated artist biography concerns the additional metadata workflow. Describe the field rather than saying only that the music library is stale.
Choose the scan scope appropriate to the edit
The manual offers whole-library, source and artist-or-album scanning routes. A manual Scan item to library can offer a full tag rescan even when files appear unchanged. The documentation also notes that scanning an individual song scans the songs in its album. Start with a small, known album when checking a tag edit and compare the actual text afterwards, keeping the original files available.
Do not expect a new-item query to refresh old biographies
Kodi’s Query info for all artists or albums targets entries not previously scraped. Refresh is the documented operation when previously stored additional information needs updating. Where local NFO information exists, read the prompt about using it or ignoring it for an internet refresh. This data flow explains why repeating a general library update may leave the same biography visible while new tracks appear correctly. Verify the edited tag and the separate artist information independently.
Questions, answered
Does Query info for all artists necessarily replace an existing biography?
The manual says that query looks for previously unscraped entries; use the documented Refresh workflow for an existing artist record.