Summoning an item in 1.9 with motion

When I put

/summon Item ~ ~2 ~ {Item:{id:"minecraft:diamond",Count:1b,Motion:[0.0,0.8,0.0]}} 

in a command block, it summons the diamond with Count:1b but it doesn't follow the Motion Tag. Does anyone know how to get the Motion Tag working?


/summon Item ~ ~2 ~ {Motion:[0.0,0.8,0.0],Item:{id:"minecraft:diamond",Count:1b,}}  

That should work. You were using it in Item tag, but it should be on the entity itself.