Either at the termination of the factory or during its subsistence, it shall be competent for any party beneficially interested in the estate, or for any succeeding factor, to make appearance, and upon cause shown to open up the audit of all accounts which have been audited by the accountant in absence of such party or succeeding factor, and also all questions in the accounting which have either not been submitted to the decision of the lord ordinary or the court or been reserved, and also all questions which have been decided merely as between the accountant and the factor or between the factor and some other beneficiary, reserving always to the factor and his representatives their answers and defences as accords the law; but if such party or succeeding factor shall so appear, and such question shall be opened up and decided, the judgment, if pronounced between the factor and a party beneficially interested, shall be final and conclusive as between them and their representatives, and if pronounced between the factor and succeeding factor, shall be final and conclusive against the factor and the estate.