Bankruptcy Ct. did not err in rejecting debtor’s claim that creditor’s mistaken filing of 2013 release of mortgage on debtor’s property at time debtor still owed money on said property extinguished debt and creditor’s security interests in said property that was subsequently sold in foreclosure action. Record showed that creditor recorded subsequent document cancelling satisfaction noted in 2013 release before debtor had filed bankruptcy petition and before property had been sold. As such, Bankruptcy Ct. could properly find that debtor did not obtain rights from 2013 release because it was unilateral and without consideration. Moreover, Ill. case law treats mistaken release of mortgage as ineffective between mortgagor and mortgagee. Also, issue was not moot under 11 USC section 363(m), even though subject property had been sold in foreclosure action.