Kan. Stat. Ann. § 58-30,104
(a) (1) The agency relationships set forth in K.S.A. 58-30,103, and amendments thereto, shall commence at the time that the client engages the broker, and shall continue until:
(B) if a transaction is not closed according to the agreement of the parties, the earlier of:
(2) Except as otherwise agreed in writing, a broker owes no further duties to the client after termination, expiration, or the closing of a transaction according to the agreement of the parties, except:
(B) to keep confidential all confidential information received during the course of the engagement unless:
(b) (1) The relationship between a transaction broker and a seller, landlord, buyer or tenant shall terminate when:
(B) if a transaction is not closed according to the agreement of the parties, the earlier of:
(2) Except as otherwise agreed in writing, a transaction broker owes no further duties to any party to the transaction after termination, expiration or the closing of a transaction according to the agreement of the parties, except:
(B) to keep confidential all information received during the course of the engagement which was made confidential by request of any party to the transaction, unless:
L. 1995, ch. 252, § 4; Revived, L. 1997, ch. 65, § 28; L. 1997, ch. 65, § 29; October 1.