BEN_PRTT_ENRT_RSLT Table doesn't get updated

Summary:

Whenever we made any changes in the Benefit Enrollment Page,
The data (LAST_UPDATE_DATE ,LAST_UPDATED_BY) don't get updated on the Group Medical Plan and Parental Plans records in 'ben_prtt_enrt_rslt' Table.
The data got (LAST_UPDATE_DATE ,LAST_UPDATED_BY) updated only for few plans: ‘Group Term Life Plan’ and ‘Group Personal Accident Plan’.

Navigation: Login as an Employee (Person Number: 16100103)

Changes Scenario 1:
Me -> Benefits -> Make Changes -> Continue -> Submit

Changes Scenario 2:
Me -> Benefits -> Make Changes -> Continue -> Group Medical Plan -> Edit -> Enroll dependent (Check the dependents)-> Click Ok -> Continue -> Submitwe ran the Below Query, but we didn't get any data.