Mich. Comp. Laws § 324.35111: Saving clause.

Sec. 35111.

Nothing in this part affects or diminishes any right acquired or vested before August 3, 1972.

Nothing in this part alters the status of land dedicated by the commission before August 3, 1972 until dedicated pursuant to section 35103, except that tax reverted lands are subject to section 35110. Purchased land dedicated by the commission before August 3, 1972 is subject to ad valorem taxes if dedicated pursuant to section 35103.