You can merge two system records together only if they originated from the same external system. The system records can belong to the same patient profile or each can belong to a different profile. When the merge includes two different patient profiles, the profile from which the system record is merged is called the merge from profile; the patient profile into which the system record is merged is called the merge to profile. If you merge the only active system record in one patient profile into a system record in a different patient profile, the merge from profile is deactivated (since there are no active system records remaining, there is nothing from which to create the SBR). During a system record merge, you can select fields from the non-surviving system record to be retained in the surviving system record.