An asset can look correct in its source application and still fail after import into Cinema 4D. Treat animation integrity as a translation problem between tools, with clip ranges and joint orientation checked on both sides.
For Cinema 4D, use a short representative clip to verify joint names, rest pose, frame range, root motion, and deformation. Preserve the source rig until root motion passes review.
Check frame rate, clip boundaries, root motion, joint orientation, event timing, and deformation on a representative action. Apply this animation integrity guidance to the actual Cinema 4D delivery path.