RouterOS allows resetting configuration with /system reset-configuration command //

The backup file of the existing configuration is stored before reset. That way you can easily restore any previous configuration if the reset is done by mistake.

If the router was installed using Netinstall and had a script specified as the initial configuration, the reset command executes this script after purging the configuration. To stop it from doing so, you will have to reinstall the router.

It is possible to override the default reset behavior with the parameters below:

• keep-users Do not remove existing users from the configuration
• no-defaults Do not load the default configuration, just clear the configuration