Imho, the Bauernmarkt moved back to the Josephsplatz as the construction work have been finished. I confirmed this observation with a visit and see that another marker is already present at the new/old/current location of Josephsplatz.

The location of the Node Bauernmarkt Josephsplatz (3929292582)
Version #7 at Tengstr and Zieblandstr shall be deleted as it is old and obsolete information.

Source: Personal Visit and 
https://www.muenchner-bauernmaerkte.de/standorte-zeiten.html