I have a lot aerial imagery, where the X; Y; Z & OPK was recorded in PCS EPSG 23700 and VCS EPSG 5787. Today it is impossible to process these images, while it runs perfectly in ArcGIS Pro's Reality mapping workspace. It says the coordinate system transformation is unavailable to WGS84/EGM2008. Yes, it is true, but who needs it it if every data and the GCPs are referenced in the given coordinate system? I suppose, the the problem is coming from the Globe or from the footprint generation, but in this case you can ask for a DEM (like in Reality mapping workspace in Pro).
Thank you & Best regards,
Ákos Halmai