Structure Blocks cant be cloned relevant to an entity in any good way.

*What I expected to happen was to do

/setblock ~ ~ ~ structure_block (#)

and it sets the mode(Data,Save,Load,Corner). Same for

/summon FallingSand ~ ~ ~ {Time:1,TileID:255,Data: (#)

*What actually happened was it always sets it into data mode regardless of what I set the number to.

Steps to Reproduce:
1. Type

/setblock ~ ~ ~ structure_block #" or "/summon FallingSand ~ ~ ~ {Time:1,TileID:255,Data:#}

The # is either 1 2 3 or 4
2.Run the command
3.Get a data structure block every single time.

Extra
If possible it would be a good idea to add a data tag which allows you to set the NBT data into it so when you place it or summon FallingSand of it, it will display it in the structure block and function properly.