After writing to your assistance, they told me that this problem is a bug and to write here. Basically, when I export to Unreal Engine 4 many skeletal bones are not where they should be and this creates big problems in retargeting existing animations. I enclose some pictures. I state that I lost a month of work trying to solve the problem unnecessarily.
Very sorry to hear that you encounter this issue in your working progress.
But we will release the Unreal Retarget for CC1&3 base tutorial as soon as possible.
Thank you for your patience!
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