dwp reviewing previous mobiliy awards

heloo.,
sorry if this is duplicate question as i did post same few days ago but cant seem to find it ,, its about dwp looking back on previous awards on mobility due to changes in the going out criteria ,, i put in for pip in feb 2016 ,and went to appeal in november 2016 and was awarded 10 points for mobility due to overwhelming phycological distress going out ,, i was wondering as have tried to read up on it but it all very confusing ,,would i be one of the claimants that would be entitled to the higher mobility award and h=if so do they backdate it from date of your award ,, ..thank in advance for any reply to my querey ,
alison

thankyou gordon ,, i thought that might of been the case as was awarded catagory e under the going out ,, ,ime currently going through a review on my award filled in the form in feb ,,and notified them in the form there a change in the mobility part as have been diagnosed with fibro which also affects the moving around part of mobility and majority of days i stuggle , so will wait to see the outcome after my assesment ,thankyou for your advice gordon ,