cancel cheque from old year

SOLVED

in March (previous fiscal year) we posted an invoice and cheque; it did not clear in March and so is carried over into the new fiscal year. in the meantime we have reconciled the March bank, closed the 2015 year and opened 2016. Now in April we are informed that the cheque needs to be cancelled. since we are crossing over fiscal years, how do we cancel a cheque written last year after the bank was reconciled, in this year's books? the funds in the bank carry over into the new fiscal year,  but the expense account zeros out when the new year opens. what is the fix to balance both years with respect to this event?