Universal Credit and ESA

Hi everyone
Crossposted on D+D board.

Anyone know what is happening with ESA when Universal Credit comes in?
(I know there are issues with UC, but assuming it does actually happen the way the govt would like to think it will.....)

My question relates to Income Based vs Contribution Based ESA.
As far as I can see from the Govt websites, it seems that only Income Based ESA is going to UC.
Is this correct?
Would be pleased it someone could point me in the right direction on this one
Thanks