tribunal win

WWon Tribunal 27 August I won enhanced mobility 2 yr back pay my question though is if I scored 4 points in a tribunal back in 2016 question 9c overwhelming distress then had those points took away back in 2018 by a decision maker (bear in mind I then got awarded low mobility in 2020 by scoring 8 points if those points had not been took for no reason back in 2018 I would've scored enhanced ) the tribunal I've just won has gave the 9c question 4 points back to me so I'm thinking with regaining these 4 points should t I also of received 2 yr back pay on enhanced mobility as that's what would've been scored 2020 to 2022 then I qualified anyway for the enhanced mobility which I'm receiving any help would b appreciated as I don't think it's a error of law but it has to go back to tribunal judge now who awarded them back in August 27