You do not need to replace your Oregon Driver License, Identification Card, or Instruction Permit as a result of DMV issuing alphanumeric customer numbers to new customers. Alphanumeric customer numbers will only be issued to customers who have never had a transaction with Oregon DMV before.
In fact, if you already have an Oregon Driver License or Identification Card, you can't change your customer number. The customer number your received with your first transaction at DMV is assigned to you for life.
Both numeric and alphanumeric customer numbers are valid.
Customer numbers are located above your name on Oregon Driver Licenses, Identification Cards, and Instruction Permits. Examples are provided in the information Releases above.