Regarding declaration filed by railway administration in CAT

my wife is a railway employee. She was not given certain pay hikes due to her in CAP. After failed representations she filed a case before CAT Chennai in 2009.During pendancy of the case in 2010 the hike was given to her and the Divisional Personnel Officer filed a declaration in the CAT that they have granted the hike due to my wife and hence the case was closed by the CAT. Subsequently after a few months a notice was given by the Admn to my wife as to why that hike can't be withdrawn. A reply was given citing the CAT case and the declaration given by the DPO to the CAT immediately. No further communication from the Admn. and the hike was continued for all these 8 years. My wife is to retire this month and pension papers submitted the accounts dept is raising queries regarding that hike. Now that 8 years have elapsed and declaration given in CAT by the administration and no action taken after that can they raise this issue now and delay the processing of pension and settlement.