(a) Transactions validly entered into before April 1, 1975, and the rights, duties, and interests flowing from them remain valid thereafter and may be terminated, completed, consummated, or enforced as required or permitted by any statute or other law amended or repealed by this chapter as though such repeal or amendment had not occurred.
(b) The validity of existing articles and charters shall not be impaired by this chapter. Appointments of officers in effect on April 1, 1975, shall continue in force until changed as permitted by this chapter or other applicable law. Regulations which have been issued by the department or the commissioner and fee schedules established by either of them or existing pursuant to statute shall remain in effect until changed pursuant to this chapter.