All wills heretofore proved and admitted to probate, not afterward rejected by the court, the records of the court not showing approval of such acceptance and probate during a regular session by the court, and which have been spread upon the records of said court for ten years, have the same force and effect and shall be received as evidence in all the courts of this state, as though properly approved and probate confirmed at a regular session of the court.
§ 474.530, RSMo
Effective 1/2/1979