The replaced contract replaces the original contract, replaces it completely and triggers the terms of the original contract. A replacement contract is concluded between the parties to a previous contract. A replacement contract replaces a previous contract and also discharges the old contract. A replacement contract is different from a novation, because novation requires the replacement of the original debtor by a third party who is not a party to the original contract; if the debtor accepts the third party, the contract is performed immediately. Substituted contracts are not the same as Novation, as novation requires the involvement of a third party who was not part of the original contract. In novation scenarios, if the third party is accepted by the debtor, the contract is executed immediately. Substituted contracts immediately relieve the previous contract and merge it with the new treaty.