So I was trying to figure out why all my Reflected Ceiling plans were not showing the same information in my Mechanical models. My views were looking like this:



I noticed that the only thing different in the View Properties was that the "Underlay Orientation" was set to view (but greyed out as there was no underlay set). So I turned an overlay on just so the setting wasn't greyed out, changed the underlay orientation to "Reflected Ceiling Plan" to match my other ceiling plan views. The result was that all the views now matched:



The only thing I can think of is that because this view is sest as a "Mechanical" discipline view, it is showing the architectural as an underlay. If this is the case, the Underlay Orientation option should not be greyed out like it was, IMO.