MarkVision Professional (MVP) 11.0; MarkVision Professional (MVP) 10.2; Server or MVP service/daemon was restarted just after the modification was made; When you modify administrative settings or the user table, the modifications are queued in the memory to be written to the server configuration files. The delay in writing the changes is set by default to a minimum of 10 minutes but can be longer depending on the current load of the server.  If  the server is rebooted before the queued data are written to the files, the modifications are lost.