NotebookLM Drive Sources: Keep Versions Current
References checked: 5 October 2026

Task: Is the answer using the updated source or an earlier version?
Inputs: [provide an authorized Drive source and a known updated detail]
Audience: [intended reader]
Required result: a notebook answer based on the intended current version.
Use approved sources and preserve dates, definitions, conditions, and exceptions. Separate confirmed facts, interpretation, and unresolved questions. Do not invent missing details. Show the evidence needed to review consequential claims. Ask one focused question if a missing requirement blocks the result.
Acceptance checks:
- Original permissions are valid
- The changed detail is present
- Outputs have review dates
- Access failures are explicit

Practice
Change a fictional deadline and compare current source answers with an older saved report.

Official reference
https://support.google.com/gemininotebook/answer/16215270?hl=en