Repairs run.race_id, run.runner_id, run.jockey_id, run.trainer_id, run.course_id and run.bonus_scheme_id — the FK columns on run, sourced from tblruns.WRaceID / WHorseID / WJockeyID / WTrainerID / WCourseID / WBonusSchemeId. Each can end up wrong the same ways: never resolved at migration time (the implicit default was left in place), resolved to the wrong row because the true parent hadn't been auto-copied yet, a cross-entity swap, or correct at migration time but drifted since. A single rule fixes all of them: for every already-migrated run row, this re-reads its current source ids, translates each through the current config_id_mappings, and corrects whichever column(s) disagree — independently, so one run row can have zero to six columns corrected at once.

jockey_id and trainer_id are discipline-aware — the same source jockey/trainer can have more than one destination row, one per discipline it raced in — so those two are resolved through the run's own WDiscipline, not a plain source-id lookup. race_id and runner_id are not discipline-aware and resolve via a plain source-id lookup.

Only already-resolvable columns are touched — a column whose parent genuinely hasn't migrated yet (or has no mapping for this row's exact discipline) is left alone, never auto-copied. This overlaps in scope with FK Integrity Repair for jockey_id/trainer_id/runner_id (that tool already recomputes and corrects those three) — running both is safe since both are idempotent, but redundant for those three columns. This feature's one exclusive contribution is race_id, which nothing else currently repairs. It is also safe alongside Auto Sync and the general value backfill on run: it only ever reads/updates run rows that already have a durable config_id_mappings entry, which Auto Sync never touches mid-insert.

• Run → Race FK tblruns.WRaceID → run.race_id
• Run → Runner FK tblruns.WHorseID → run.runner_id
• Run → Jockey FK discipline-aware tblruns.WJockeyID → run.jockey_id
• Run → Trainer FK discipline-aware tblruns.WTrainerID → run.trainer_id
• Run → Course FK tblruns.WCourseID → run.course_id
• Run → Breeding Bonus FK tblruns.WBonusSchemeId → run.bonus_scheme_id

Preview runs the exact same reads and resolves the exact same expected values, but skips the actual write — no column is changed. Use it to see what would change before committing to a real run.