When exporting a hosted feature service as FGDB either through the web portal interface via AGOL or REST via create a replica, the vertical component of the data set is dropped.
Currently have a hosted feature set in EPSG:2193 and with EPSG:7839 as vertical so can use scene viewer to check and correct vertical geometry in ArcGIS Pro, but doing this via the Hosted Feature is painfully slow.
When exporting as a FGDB via AGOL, the resulting FGDB only has EPSG:2193, no vertical!
When I open that in ArcGIS Pro I see the Z geometry in Attributes but cannot modify verticles as the edit tool is disabled via bad geometry.
The only way I can get the vertical CRS is with Feature Class to Feature Class via ArcGis Pro.
Exporting via AGOL is breaking the dataset.
The workaround is to manually Define the Feature Classes with a VCS in ArcGis Pro.
Does not help those without desktop software.
Have asked our Esri agent to raise a fault ticket as I am sure this is widespread on AGOL?
edit: grammar