Camera mounted on a Rig Rail doesn't save keyframed rotations

Hi!

Thank you so much for your detailed answer!

Now I can keyframe different rotations in the Transform of the RailCameraMount, but I have to set these manually without a gizmo, I mean I have to try rotation values until I get the camera to point to what I want, but this workflow is not ideal at all.

Is there a way to rotate this RailCameraMount with a rotation gizmo??

Thank you again!