The BOFM configuration is defined per AMM IP address. If you change the IP of the AMM in a chassis and reapply the same BOFM configuration file, then the BOFM configuration changes. For example, assume that Chassis-A uses IP-A, and Chassis-B uses IP-B, and you apply a BOFM configuration for these two chassis. If you swap the IPs so that Chassis-A uses IP-B, and Chassis-B uses IP-A, then re-apply the same BOFM configuration file, the BOFM configuration is swapped between the two chassis.