You can post the WO-I Finished Production scrap as well as Scrap reported when posting labor with a value based on your default settings.   There is one for "Include FP Scrap in Cost of Good Parts?" which you would set to N for a separate valued transaction, and "Remove Scrap $ in WO-F" which also includes other labor reporting programs.  This can then be reported on in JC-Q.  It will post to the WIP Variance Expense account but you can use the JC-Q report and make a Journal entry