ESA50

Hi,
I have been in the ESA Support Group since turning over an appeal in Sept 16, the judge recommended that I shouldn't be assessed again before Sept 18, I have just received a letter this morning from Health Advisory Service requesting that I complete a ESA50 form & return by 17/8/18 .... just this mean its all starting again from scratch ?
Do I count this as a new claim, all my disabilities are degenerative - do I give them all the medical info that I used for my successful appeal in Sept 16 or do I have to provide new ?
I had a quadruple Heart bypass in 2003 & one of my bypasses as recently failed, I'm obviously under a consultant cardiologist but he's unsure how or 'if' this might be repaired, I'm obviously suffering from chronic angina,struggling to walk anywhere and on a lot stronger medication .... my question also is do I mention all this in the ESA50 because as of the moment I haven't told them of any change in my health as everything was going on ticketyboo & I didn't want to upset the apple cart !! my query being if they knock back my new claim ( which they are renowned for ) I presume I would have to make a new claim for ESA & I'm under the impression it has to be a new illness - which my failed artery would be - I am obviously looking at the worse case scenario !! By the way I'm also in receipt of PIP @ standard rate for both components. thank you in anticipation.

Thank you again for your brilliant advice,
I received my letter this morning confirming that I will remain in the Support Group, thankfully this was done without the need for a stressful ftf, their is no mention of dates though , my last was 2 years but that was after appeal , my conditions have worsened which they will be aware of from the medical evidence I forwarded - any thoughts ?
Many thanks again Gordon.