There's being a recurring issue with Iclone -> Unreal Engine Workflow, since I started using this product, it's always popping in forums and discussion threads but there's no definitive answer, over the years the reallusion team has made decent strides to assist with this issues

i. Exporting a CC Character with unreal skeleton.
ii. Exporting animations with root motions into unreal.

My Suggestion or feedback is that I've noticed certain animations which have rotation e.g a turn in place animation, a spin and attack animation, basically any character that has to do with the Character rotating the root motion export from Iclone 8 or CC4 doesn't function properly in Unreal Engine.

If this issue can be rectified "Ensuring that all root motion data exported from Iclone is 100% compatible with Unreal Engine without issues" in the next Iclone 8 & CC4 Update, it will be greatly appreciated by the reallusion Unreal Community