Changing the member's name via Tool #15 Update Membership Information does not automatically change the member's name in the PLASTICS file.  You would need to access Tool #11 ATM Debit Card Maintenance, highlight the member's card, and select "Reorder Card/PIN."  You will then be able to change the member's name and order them a debit card with the correct name information.  Before selecting Add/Update, make sure you only select "Order Card," and deselect the "Order PIN" and "Send Maintenance" boxes.