Here’s what worked with the Root Motion Guide Ju Sik Lee, the plugin developer, helped me -using the tool like this (so the solution is entirely Ju Sik Lee’s):
Adjust Animation Track
- Bone Name = root
- Adjust Rotation = (0, 0, 180)
Adjust Animation Track
- Bone Name = pelvis
- Adjust Rotation = (0, 0, 180)
Rotate Animation Track
- Bone Name = root
- Adjust Rotation = (0, 0, 180)
There’s a video here:
I think that the issue was that the root bone was rotated 180 degrees compared to the Pelvis. (The root motion all moved visually fine but it was flipped.)