Structure Block not loading on 1 world

I am attempting to transfer buildings from my old world to a newly created one. I am able to give myself the structure block, save, transfer to the new world etc. and was able to place 3 buildings. However, now when I try to load the structure block on the new world, it "gives me it" as in the whoosh effect and the appearance of the block onto my Hotbar/inventory bar, but then a second later there is nothing there! It just disappears. I am still able to get/use one in my other worlds but this one just won't work!