Backend now correctly handles machine instance change
Backend now correctly handles machine instance change

CURA-1323

ynotstartups/Wanhao,hmflash/Cura,fieldOfView/Cura,senttech/Cura,ynotstartups/Wanhao,totalretribution/Cura,hmflash/Cura,totalretribution/Cura,fieldOfView/Cura,Curahelper/Cura,senttech/Cura,Curahelper/Cura