Can't assign Unreal 5 skeleton to the new character

[Osama-Gamal]

after using the plugin to convert Maximo to UE skeleton, I can't assign it to UE5 skeleton, because for some reasons the plugin adds "End" bone more than the UE skeleton, I have tried to remove those "End" bones in blender but after importing the character again the engine generate them, I don't want to retarget the animation I just want to use the new character directly.