Siebel Enterprise Integration Manager Administration Guide > Merging Data > Editing the Configuration File for Merge Processing >

Specifying Survivor Records for Merge Processes

In a merge process, data from the record you select as the surviving record is preserved, while data from the other records is lost. Do not specify the same record as both the survivor and the victim or it will be deleted. You should also make sure that a record is specified as a survivor only once in a batch.

NOTE:  EIM behavior, whether executed from the GUI or through an EIM run, does not merge data in the base record. It simply repoints the foreign keys in the dependent child records. This applies to all columns in the base table. This could lead to unintended data loss in an extension column. For more information, see Example of Running a Merge with Custom Columns.