Chapters 15 (commencing with Section 6510) and 17 (commencing with Section 6710) of the new public benefit corporation law apply to acts for involuntary dissolution of a public benefit corporation commenced on or after January 1, 1980, and Chapters 15 (commencing with Section 8510) and 17 (commencing with Section 8710) of the new mutual benefit corporation law apply to acts for involuntary dissolution of a mutual benefit corporation commenced on or after January 1, 1980; but the prior nonprofit law governs any such actions commenced prior to but still pending on January 1, 1980.