Past service Pay protection

I joined as teacher in Zilha parishad school in 2002. After passing MPSC in 2010 I joined in Sales Tax Department Govt Of Maharashtra as a Assistant Commissioner sales Tax in 2010. Last salary as teacher was nearby Rs. 19000/- Before joining this service I have completed all procedure to intimation about exam to my Office. I gave technical resignation. I did work as a teacher 9 years but I have not received confirmation about permanent posting because in ZP they are doing this work so late. After joining in Sales Tax department I passed UPSC exam in 2016. I have technically resigned and also completed all procedures such as prior intimation about exam to department, one month salary payment before reliving. My last salary was nearby 56000/- in sales tax department. I was not confirmed in sales tax department and was probationer six years because I have not cleared departmental exam. So I got only first year increment. Balance were hold till the confirmation. Before completion of this probation period I joined In central service in 2016 as assistant commissioner Income tax. (Actually probation period is 2 years or till passing departmental exam.) I got only pensionary benefits but not pay protection because I was not confirmed in sales tax department. Can I get pay protection now? And what will be arrear amount?