The vehicle was supposed to make an automated dock to Zarya's nadir port on November 18. However, a failure of the Kurs automated docking system forced manual docking using the backup TORU system.
M1-4 was docked to the ISS for two weeks before undocking on 12/1/2000 and remaining a short distance from the ISS in free flight for 25 days. The vehicle re-docked again to the Zarya nadir port on December 25 using the TORU system, as the automated Kurs system could not be used due to permanent retraction of an antenna required for docking during the prior failed automated dock attempt.
M1-4 undocked from the ISS the final time on February 8, 2001 and re-entered the atmosphere and burned up during re-entry the same day.
