Every edit to a dataset or LLM judge scorer is saved as a new version, in a log of its own per entity - a dataset version tracks name, description, questions, and status; a judge scorer version tracks its rubric and offline config (the scorer’s version panel lives in the editor’s header). Each version is summarized by what changed ("Updated questions", "Updated acceptance criteria, judge model"), shown newest-first with a v{N} badge, browsable from a Version history panel. On any older version, click Apply this version to pull its fields back into the form (you still have to hit Save to actually restore it - this doesn’t overwrite anything on its own), or Delete to remove that version from the log; the current version offers neither. The very first save is always recorded too ("Created"), so a freshly-made dataset never shows an empty history. A no-op save (open the editor, change nothing, hit Save) doesn’t create a new version - only genuine field changes do.
