Mo. Rev. Stat. § 535.170: Lessee barred from relief, when — appeal permitted, when.

After the execution of any judgment for possession pursuant to this chapter, the lessee and the lessee's assignees, and all other persons deriving title under the lease from such lessee, shall be barred from reentry of such premises and from all relief, and except for error in the record or proceedings, the landlord shall from that day hold the demised premises discharged from the lease. Nothing in this section shall preclude an aggrieved party from perfecting an appeal or securing a trial de novo as to any judgment rendered, and may as a result of such appeal or trial de novo recover any damage incurred, including damages incurred from an unlawful dispossession.