how to delete/disable multiple compliance rules

We have a requirement to delete multiple compliance rules and it seems only disabled rules can be deleted in One Identity Manager so I am trying to disable them first then delete but getting error.

I tried from Manager > Identity Audit > Rules > selected multiple rules and pressed Enter button in keyboard > Clicked Disable rule from Tasks but getting below error message:

Method Disable(VI.DB.Entities.ISession, VI.DB.Entities.IEntity, System.Threading.CancellationToken) is been deactivated and cannot be called.

Can someone please advise.

This is for One Identify Manager version 8.1.5 

Thank You.

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