After upgrading the web maintenance console I was able to open the saved DSYS file so that it showed the correct number of tenants. This allowed me to change the MOH setting and save the file under a new name. I loaded the file into the NS700 (without upgrading firmware) and the system took the new file and is working correctly. I also updated firmware, on our shop NS700, to V5.0 and updated their DSYS to V5.0. That also saved and worked correctly.