Hi Tish,
All claimants will be reassessed periodically. Under normal circumstances (ie without backlogs) this will be a maximum of 2 years for those in the WRAG and 3 for the Support Group. I think it is inevitable that some of these assessments will be face2face.
The ESA assessors will not routinely look at any historical paperwork, that includes previous ESA claims as well as PIP.
Nothing on this board constitutes legal advice - always consult a professional about specific problems