recent update said that
  • AimConstraint
  • LookAtConstraint
  • ParentConstraint
  • PositionConstraint
  • RotationConstraint
  • ScaleConstraint
were whitelisted for avatars and sdk3 worlds. but they have not been added to the whilelist.
I used the sdk3 when uploading a avatar (first image) giving the warning they will be removed. I removed the warning to get the avatar uploaded just encase it was the sdk that was the problem.
when loading the avatar in sdk 2 and sdk 3 worlds i could read and see the components were being removed (image 2).