Owen J. Roberts, Schwartz v. Irving Trust Company…
“ In one the form was: 'It is, however, expressly understood and agreed that the said Landlord does not waive any right to prove against the Bankrupt Estate any provable claims to which the Bankruptcy Court may adjudge the Landlord is entitled, but this shall not be deemed to render any claim a provable claim which is not otherwise such or relieve the Landlord from the necessity of proving and obtaining the allowance of any such claim or preclude the Trustee from contesting such proof or allowance. ”
