Data Loss During Settings Migration (V2 → V1)

[akramcodez]

Description

In migrateSettingsToV1, the migration iterates over a reverse mapping and removes the top-level key from v2Keys when a mapped property is found:

v2Keys.delete(newPath.split('.')[0]); // e.g. 'general'

If a top-level object (e.g. general) contains multiple properties—some mapped to V1 and others that are new or custom—processing the first mapped property removes the entire object from v2Keys. As a result, remaining unmapped properties under that object are skipped.

Impact

• Silent data loss during migration
• New or custom V2 settings without V1 equivalents are dropped instead of preserved