Aww!! That teaches you to have too many kids Soundwave!
l=lVl=l l=l l=l \l H l/ AUTOBOTS
l\ .M. /l \l=V=l/ l\lVl/l DECEPTICONS
You say Prowl I say Barricade You say Peace I say War You say Protect & Serve I say Punish & Enslave You say Red I say Purple You say Forgiveness I say Blast His Head Off You say Mercy I say Megatron You say Autobot I say Decepticon
Same way that Optimus can make his cargo truck disappear and reappear every time he transforms. I put it down to some alien-transformation magic. And Soundwave may have upgraded to one of those inter-dimensional pockets that TFA Swindle has after Soundwave got his 7th baby. XD