So basically, it all boils down to the way a "Detail View" and a "Plan View" are treated (based on the idea of view range):
On a floor plan view the range is defined as such:
- Cut Plane
- Primary Range
- View Depth
On a Detail View the range is as follows (similar to that of an elevation or section):
In conclusion, with a top, offset, or primary range... A "Detail View Callout" of a floor plan will not show the stairs above...
The lesson is simple: When calling out a floor plan make sure the callout type is set to "Floor Plan"...
All images courtesy of Autodesk Revit 2011's help files...