Oh my! Do I like this new feature of OMA8.5!
In previous versions of the OMA you had to wait like 10 seconds if you opened a part of the OMA that needed up to date where used data. Doing that all day long it was pretty frustrating some times. This is no longer needed. The OMA now installs an SQL trigger that will check the where used data in 100ms. A logic consequence is that the question "Do you want to update the where used objects?" is also no longer needed and therefore made optional in the OMA setup.
Go to the "Administration Tasks" and execute "Add Ask SQL trigger".
Set the "Update Where Used" to "Always" if you like.