In the event that the provisions of the Public Employment Relations Act prohibiting the mandatory payment of union dues or service fee are repealed or there is a partial repeal or modification of MCL 423.210 the parties agree to negotiate over any changes to this article. In the event that the provisions of the Public Employment Relations Act prohibiting the mandatory payment of union dues or a service fee are repealed, the conditional language in Paragraph 237 will be enforced as a condition of employment.