Well. . .
The "Set Quick Key Status" merely sets the default/initial status of the given Quick Key, as opposed to whether the Favorites List/System (or Department) will actually scan.
You can have a FL Quick Key ON, but the Favorites List may not scan in several conditions: The Service Types for channels may not be turned on, "everything" in the Favorites List (etc.) could be off due to operation of Location Control, "everything" in the Favorites List (etc.) could be avoided due to a Set Avoid condition.
Granted, a big chunk of the time a Favorites List is likely to scan when the FLQK is on, but I just wanted to point out there may be reasons why it does not.
And of course this is the default status of the Quick Keys. All bets are off if the QKs are toggled due to button press.