Hi cc53,
Yes, the ESA3 only assesses you financially to see whether you are entitled to IR ESA, it will not be a reassessment of your capabilities.
The ESA50 is used to assess/reassess your capabilities for work or work related activity.
As Gordon states, the timing of your next ESA WCA will be in line with the prognosis of your current award, and should begin a few months before the end of said prognosis.
bro58
bro58