- Source revoked: the source was withdrawn after the content was generated. Revocation stops the source being used in new generations and at release, but content already produced still cites it.
- Newer version exists: a later version of the source was uploaded after the content was generated.
A newer version is not necessarily a material change. The page shows which evidence changed under which content, not whether the difference matters. Deciding whether to regenerate is yours. Only your own generated content is listed.