Benefits enrollment dropping after evaluating QLE

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We are having this employee enrolled into a US Ben program with plan types, plans etc. Once a location change QLE is evaluated for this employee, the BEN program is no longer visible. ie QLE processed 8/22/23, As on 8/22/23 or later, employee is shown to have no benefits attached. It is observed that though the formula returns expected values, the enrollments are still dropped. Is there a way to validate what may be the cause, in this case?

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