If the record type is enabled in Salesforce, you can define synchronization settings specific to each record type of an object.
When you run a migration batch job, the batch job looks for the synchronization settings in the following order:
Synchronization settings specific to each record type.
If the synchronization settings are not available for a record type, the batch job looks for the synchronization settings defined for the object to which the record type belongs.
For example, if you do not define synchronization settings for an account record type named Account:Personal, the batch job looks for the synchronization settings defined for the Account object.
If the synchronization settings are not available for the object to which the record type belongs, the batch job uses the default synchronization settings of the object.