At the root level, the merge process merges the data in the root records of the business entities.

At a child level, when the parent-to-child relationship is a one-to-one relationship, the merge process merges the sibling child records. After the merge process handles a child record, it tries to merge each level of descendant records using the same merge strategy.

At any level, when the parent-to-child relationship is a one-to-many relationship, you can select sibling records to merge in the

Matching Records

view.