C
Unfortunately and even though they are going to transfer millions of claimants with ESA awards to UC, there is no electronic connection between the systems and therefore your SG award has to be moved manually.
It is quite likely that your Work Coach has no visibility of your ESA award, I would contact them and put a note on your UC journal about the award. It can take anything up to a couple of weeks for the UC system to be updated so if they persist with the appointment then try and push it out to allow for everything to be corrected.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems