This isn't communicated very clearly in the UI, and the way the SearchEngine/Query are set up isn't great.
Define "active" as "rule will actually run", which specifically means "rule is enabled, and has a valid (non-disabled) author if it needs one".
Change the meaning of the "Active" default filter from "rule is enabled" to "rule is enabled, and has a valid author if it needs one".
Refine the status badge on the view controller to show this "invalid author" state.
Tweak the language for "Disable/Enable" to be more consistent -- we currently call it "disabled" in some cases and "archived" in others.