Merging puts the dates from each specific subdomain in the record as it was tested, as well as the examiner's name for each respective subdomain. See example below: 

Test Record 1 (with Self-Care completed on 06/15/2022)

Test Record 2 (Adult Interaction completed on 06/15/2022)

Merged Form (that shows both Self-Care and Adult Interaction data with date and examiner name from each form that was used in the merge)