The division cannot be changed by a member and does not update automatically upon moving or changing your primary club affiliation. If a division change is needed, please reach out to information@usafencing.org with the context of why you need to change your division (change of address, change of club, etc.), and we will be happy to assist you.
Alternatively, you can call the national office at (719)866-4511 and select the option for "Membership Services".