Imported FBX Animation, Root Bone doesn't move

Hello, I’ve imported an FBX Animation from Mixamo. I have looked at the Animation in Blender and the root bone is moving there, but when I import it into roblox, everything moves fine except the root bone.

Here the root bone even has keyframes, but they do not do anything.

The rig should slightly move up/down while walking but it stays perfectly still.