The two configurations with the default number of modules (three modules) didn't actually explicitly set their number of modules. That meant that if the user requested the third configuration, the number of modules would be set to two modules, but would not get set back to three modules if the user subsequently requested a different configuration.
The two configurations with the default number of modules (three modules) didn't actually explicitly set their number of modules. That meant that if the user requested the third configuration, the number of modules would be set to two modules, but would not get set back to three modules if the user subsequently requested a different configuration.