Hi dancer22
You could make a request for the records HAAS and the DWP hold on the WCA under your SAR rights ( subject access request).
Unfortunately the DWP can order a new WCA following a Mandatory Reconsideration.
You can make a SAR request online:
www.gov.uk/guidance/request-your-persona...or-work-and-pensions Let us know how you get on.
David