Hi- I have been in my job for several years- my new manager recently asked if I was at the top of my scale- I wasn’t sure... I contacted payroll who advised that I haven’t had an increment for several years (since 2015) this shocked me as my last work performance appraisal in 2016 approved an increment- I haven’t had an appraisal since that time due to management shortages etc....would I be entitled to get this money backdated?...