The loss of an instrument only affects the rights of the parties in so far as it occasions a difficulty of proof, except* that, in case of the loss of a negotiable instrument, the holder, if he loses it, loses his rights under it, unless he offer to the party primarily liable upon it an indemnity against possible claims.33

Same - Bankruptcy

258. Bankruptcy effects a statutory release from debts and liabilities provable under the bankruptcy, when the bankrupt has obtained from the court an order of discharge.

Discharge by bankruptcy proceedings operates, not to discharge the contract itself, but rather as a bar to a right of action upon it.34 It is wholly a matter of statutory regulation, and need not be further mentioned.