New Hire employee dependents are not showing up in Open enrollment

Summary:

His new hire benefits are starting from today and his dependents were added during open enrollment period.

I backed out his open enrollment and reopen his open enrollment, still his dependent are not showing up in open enrollment .

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

23C

Code Snippet (add any code snippets that support your topic, if applicable):