ArcGIS Pro local scene elevation units

[DanielSattler]

I noticed that I cannot change the vertical elevation units of any Elevation Surface?  Is there a reason for this being locked out?  All of my elevation data is in feet, yet Pro is converting it to Meters, so my surfaces are worthless and all my data is thousands of feet in the air.  Is there a way to get my vertical units in feet?  I am using a local scene and a horizontal coordinate system of NAD 83 State Plane (US Feet)....  My custom TIN was created in CAD using this same coordinate system.

[DanielSattler]

The z-values remain in meters regardless of the elevation surface.  As soon as I converted my 2D map to a 3D map, the values in the 3D map show as meters (even if the surface elev is "feet").  Meanwhile, back in my Map (2D) tab, the z values of the very same layer show as feet.  Maybe it is just a display setting?  What would control the display of z-values in a 3D scene?

Map_3D settings:

Layer settings: