Direct answer
A regression check is a review step that confirms a patch did not break something that was already correct. In AI content review, it checks whether a rewrite preserved source truth, caveats, definitions, internal links, tone boundaries and the original job of the page.
How to use it
- Record what was correct before editing.
- Patch only the defect or gap.
- Recheck definitions, claims, caveats and source status.
- Compare internal links and schema notes.
- Stop when the acceptance criteria pass, not when the draft feels new.
Example
After shortening an article, check that the caveat about AI not being a truth source still appears. If the shortened version loses the caveat, the edit regressed.
Caveats and limits
Regression checks should be proportionate. A social caption needs a lighter pass than a technical, legal or client-facing article.