(1) Remedies provided by this act are cumulative and do not affect the availability of remedies under other law, or the recognition of a support order on the basis of comity.

    (2) This act does not do either of the following:

    (a) Provide the exclusive method of establishing or enforcing a support order under the law of this state.

    (b) Grant a tribunal of this state jurisdiction to render judgment or issue an order relating to child custody or parenting time in a proceeding under this act.