---
# nuzlocke-tracker-ecn3
title: Prune stale seed data during seeding
status: completed
type: bug
priority: normal
created_at: 2026-02-21T16:28:37Z
updated_at: 2026-02-21T16:29:43Z
---

Seeds only upsert (add/update), they never remove routes, encounters, or bosses that no longer exist in the seed JSON. When routes are renamed, old route names persist in production.

## Fix

After upserting each entity type, delete rows not present in the seed data:

1. **Routes**: After upserting all routes for a version group, delete routes whose names are not in the seed set. FK cascades handle child routes and encounters.
2. **Encounters**: After upserting encounters for a route+game, delete encounters not in the seed data for that route+game pair.
3. **Bosses**: After upserting bosses for a version group, delete bosses with order values beyond what the seed provides.