(4) Upon the filing of such articles, all of the property, real, personal and mixed, and the rights, privileges and franchises of the merged corporation, association or trust shall vest in and be held and owned by the resulting corporation as the same were before held and owned by the merged corporation, association or trust, subject, however, to all the liabilities and obligations including taxes of the merged corporation, association or trust, and the rights of creditors thereof, for which the resulting corporation shall be liable in the same manner and to the same extent as if it had itself incurred such liabilities and obligations. The resulting corporation shall not thereby acquire power to engage in any business or to exercise any right, privilege or franchise which it could not lawfully engage in or exercise under the law under which it existed immediately prior to the merger. The resulting corporation shall, within twenty days of the filing of such articles with the state secretary, file a copy thereof, certified by the state secretary, in the registry of deeds in every district in which real property of the merged corporation, association or trust is situated, and with the clerk of every town where such association or trust had a usual place of business, or, in lieu of such certified copy, a certificate issued pursuant to section forty-six F evidencing the filing of such articles with the state secretary.