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All the additional fees will be discharged along with the mortgage. In most cases, when a creditor is listed on the petition, all debts for that creditor are discharged - even if the additional debts were incurred after the Bankruptcy was filed. If it were any other way, debtors would never be completely debt-free after a Bankruptcy.
Since you are surrendering your house, there is no reason to oppose the Motion to Lift the Automatic Stay, and it is not necessary to respond.