Migrating User Data
For any configuration entity that has user data type fields, the data in the user data type fields is migrated with the entity.
If two instances have identical user data configurations, then the user data is migrated correctly.
If two instances do not have identical user data configurations, then the user data is mapped to the data model according to the storage configuration in the source instance. Check to ensure that the two instances have the same user data fields. Otherwise, you must correct the user data after migration.
If the user data is context-sensitive, then a corresponding context-sensitive configuration must exist in the destination instance, or the migration fails.
User data fields that have hidden and visible values can cause problems. If the hidden value of a user data field refers to a primary key (such as Security Group ID) that is different in the source and destination instances, the migrator does not correct the hidden value. In this case, you must correct the user data manually, after migration.