Application did not terminate contingent plan When EE ineligible for Enrolled Dental plan

Pre - requisite
1.Dental plan - With additional eligibility City=Pune
2.Vision Plan is contingent on Dental
3.Vision Plan- Select Benefit Type- Dental, Contingent benefit rule - Enrollment required if enrolled into ANY selected contingent benefit type

Step:-
1.Login with EE credential
2.OE started
3.EE visited to Enroll Now page
4.Enrolled into Medical plan
5.Enrolled into Dental plan - due to force contingency vision also get enrolled
6.Now change EE city to other
7.Now visit to Enroll now page

Actual- Vision plan did not get terminated

Expected - It should get terminated after his parent plan get ineligible