Auto Match and Merge batch jobs execute a continual cycle of a Match job, followed by an Automerge job, until there are no more records to match, or until the size of the manual merge queue exceeds the configured threshold. Auto Match and Merge jobs are used with merge-style base objects only.
Do not run an Auto Match and Merge job on a base object that is used to define relationships between records in inter-table or intra-table match paths. Doing so will change the relationship data, resulting in the loss of the associations between records.