When I created a blueprint to move the crystals from its default location to the updated location of the Ball I am getting the same problem we faced before i.e. unknown location transfer of the crystal rather than the ball please check out ma code
Please check out my code
Its there in the Q/A section of the link providedhttps://www.udemy.com/unrealblueprint/learn/lecture/13758058#questions
Hope u figure this thing out
Thanks
KIP