My approach at the moment, for example with a camera, is to create a new camera at the first frame from the same abc camera view, add a keyframe and then move to the next moment when there’s a significant change in the camera movement. I then use the transfer tool to copy the new position/rotation to the new camera and I create a new keyframe and so on so forth to the end of the scene.
Is not perfect nor ideal but in more than one case it worked out fairly well.
The problem I’m having is with a scene where the most subtle adjustment in the curve editor for camera and objects has a drastic effect on the new camera/object in Cinema. At first, I thought it was because of the scale but I double checked and the scale is right.
I have to admit, working with the curves in the curve editor in Cinema has never been my favorite part of the animation process. For some reason, any new keyframe or adjustment always end up messing up a good chunk of animation as it affects the keyframes before and after the one I’m adjusting.
Something I haven’t experienced with 3dsMax, Softimage or Blender. This always puzzled me about C4D animation curves.