Not able to remove an Unrestricted Life Event that is in 'Added' Status.

Hi,

I am not able to remove an Unrestricted Life Event that is in 'Added' Status. 

Tried below suggestion;

"Set your Session Effective Date to the occurred date of these “stuck” potential unrestricted events. Select the UNRST benefit relationship and add another Unrestricted life event. Then back it out to voided. Then when you purge backed out and voided life events, the “stuck” potential events will be purged."

It didn't help as I am getting below error when setting session effective date - 02/06/2023 and trying to add Unrestricted enrollment;