Be sure to change both stubs needed with a customized check form
Every custom check form has two check stub forms associated with it: Regular and Refund. If you're planning to use your custom check form to print both types of checks be sure to modify both the appropriate stub form layouts.
The Regular Stub layout is automatically assigned to checks that are written using the Spend Money window. The Refund Check Stub layout is automatically assigned to checks that are written using the Settle Returns & Credits window. (Customizing checks)