As Modify Admin Role task can refresh the role membership cache. Hence we can use Modify Admin Role task to modify the involved Admin Role, and submit the task without making any change, then IM server will refresh the role membership cache and reflects the user's Admin Role correctly.
In order to let these happen automatically, we can create a Bulk Task to trigger the Modify Admin Role task automatically.
The following are the details of the change:
After these changes, the IM server will refresh the Admin Role membership cache at every 0:00 am.