No document is more important than the contract. It governs the whole transaction. Anything not stated in the contract is, for practical purposes, not part of the deal. Under law you are entitled to the benefit of your bargain (as written in the contract). If you want something more, you have to get the other party to agree. If you want something deleted, you need to get the other party to agree. You should assume that no contract obligation survives settlement unless explicitly stated so in the contract.