Clearing Unmanaged Computer List without losing Exceptions

In the past to clear unmanaged computers from the list, the procedure I was told to do was diable the unmanaged detector and then reenable it.

That still works to clear the list, but since upgrading from 12.1.2 to 12.1.4, this procedure also clears out the list of exceptions. 

While this is the case, the entire feature is useless as I have no way of finding any new detections in such a long list, so it needs to be cleared, but in doing so, I lose every exception I painstakingly add to exclude devices that are meant to be unmanaged (switches, printers, etc).

Does anyone know of any sort of workaround that can be used to do this without purging the exceptions list as well?