--use_registry_defaults
The parameter is used with the backup and recovery commands, except for recover mbr. It determines the values of backup and recovery options that are not explicitly specified in a command string.
If the parameter is specified, the software will use the default values of backup and recovery options set in the graphical user interface of Acronis Backup. These values are stored on the machine with the agent that performs the command. On a machine running Windows, the values are stored in the registry; on a machine running Linux, the values are stored in the Acronis Backup configuration files.
If the parameter is not specified, the software will use the default values described in this Command-Line Reference. These values are contained in the command-line utility code.