- 'old' => [ MIGRATION_OLD ],
- 'write both' => [ MIGRATION_WRITE_BOTH ],
- 'write new' => [ MIGRATION_WRITE_NEW ],
- 'new' => [ MIGRATION_NEW ],
+ 'old' => [ SCHEMA_COMPAT_OLD ],
+ 'read old' => [ SCHEMA_COMPAT_WRITE_BOTH | SCHEMA_COMPAT_READ_OLD ],
+ 'read new' => [ SCHEMA_COMPAT_WRITE_BOTH | SCHEMA_COMPAT_READ_NEW ],
+ 'new' => [ SCHEMA_COMPAT_NEW ],