Hello, I have a customer who wants me to sign an Unconditional Release with a date of November 30, 2019 even though we did not receive their payment until December 5, 2019. She's telling me the dates don't matter as long as we got paid -- but that makes no sense to me. She has her own form, which is fine in Washington State -- I just don't want to sign something (and get it notarized which she requires) if it's not true.