Mo. Rev. Stat. § 347.131: Effective date of merger or consolidation.

A merger or consolidation with a domestic survivor or new domestic limited liability company is effective as of the later of:

(1) The date the secretary files the notice of merger or consolidation for record; or

(2) The date set forth in the notice of merger or consolidation, not to exceed ninety days after the notice of merger or consolidation is accepted for filing.