Two bugs made saved learner spawns collapse to one pin on every login:
1. The spawn zone-key migration was inverted: it ran
GetAreaIdByUiMapId(1241) -> Eversong parent areaId 3430 and moved
Sunstrider coords there (wrong map / NE corner), deduping distinct
coords via InsertIfNewBucket along the way. Now it converts only
legacy areaId keys FORWARD to the canonical uiMapId and leaves uiMapId
keys untouched. Same for the [9]/[5] home-zone fields.
2. Sanitize de-duplicated coords with the flat COORD_GRID (2.0) instead
of the per-zone grid, collapsing Sunstrider's tightly-packed spawns
(grid 0.5). Now uses GetCoordGridForZone(zoneId).
Both rewrote learned.npcs in place, persisting the damage to
SavedVariables. Regression test in QuestieLearnerMultiSpawn_spec.lua.
Xurkon
32c538de15