In our current system, all account numbers include the member number (four to nine digits) plus a two-digit suffix, which indicates the type of account. These account numbers will not change when we upgrade. However, going forward new accounts will not include the member number +suffix combination and will instead be assigned a randomly generated number up-to 14 digits.
Since your account numbers will not be changed, you will not have to change existing direct deposits, automatic payments/transfers or order new checks. If any special circumstances arise particular to your account, you will receive a separate notification detailing any required update.