Yes, in that case they should be imported as georeferenced in local coordinate system (as I wrote you before).
Regarding the alignment, if there is a proper overlap, the data will be aligned without control points. If not, the control points have to be used to merge the components.
I suppose this is related to not using georeferenced settings during data import.
Not directly, but there is a workaround:
- go to SCENE 3D/TOOLS/Mesh Model/Info Panel
- there you can set the wanted rotation directly
- this will change the reconstruction region to the set angle
- go to SCENE3D/TOOLS/Scene Alignment/Set Ground Plane and use the option Set Ground Plane by Reconstruction Region
- this will rotate the model accordingly
