Mich. Comp. Laws § 487.802

Sec. 2. In case there shall be, at any time after the making and filing of said certificate, any change in the name or style of said firm, or in the terms of their partnership, then a new certificate, verified as before specified, shall in like manner be filed, as required by section 1 of this act, before such change shall take effect; and until such new certificate shall have been made and filed, as above specified, the individual member or members of the firm, as set forth in the certificate on file, shall be held to be the actual members of the firm, and in all respects holden and liable for any obligation, debt or liability, incurred by the said company, as brokers or exchange dealers.