Hi, my name is worrypot!

hi i am migrating from esa support group to universal credit,,and i am at the end of the process 1st payment on 3rd of july,,however got a letter yesterday saying my contribution based esa is changing to new style esa i always thought i was on income based esa because i havent worked for decades ..the letter they will book me a appointment soon to discuss how my illness effects my being able to work ,,is this a reassessment ?] ive not been able to work because of anxiety states ocd panic attacks etc,only i thought you wont be reassessed if you just migrate from esa support group to uc any help appreciated