I recently had the same issue.  The default form in designer is Stub, Stub, Check, Stub, Stub.  Do away with the first two stubs and this  will lock your form type to  Check, Stub, Stub.  The trickeist part is adding the new fields to the form.  You add PR_CheckPrintingWrk then replace all the old fields with the new fields.  Once you have this complete remove the old tables and name it as btmlinesoft pointed out, PR_DirectDepositStub.rpt.  I have seen issues with locking the form down as I suggested, you may get extra headers (check portion) after a correct DDStiub.  This is fixed by using suppression on the section like  "IF NEXT({DDSpell Amt}) = {DDSpell Amt} then TRUE"

I recently had the same issue.  The default form in designer is Stub, Stub, Check, Stub, Stub.  Do away with the first two stubs and this  will lock your form type to  Check, Stub, Stub.  The trickeist part is adding the new fields to the form.  You add PR_CheckPrintingWrk then replace all the old fields with the new fields.  Once you have this complete remove the old tables and name it as btmlinesoft pointed out, PR_DirectDepositStub.rpt.  I have seen issues with locking the form down as I suggested, you may get extra headers (check portion) after a correct DDStiub.  This is fixed by using suppression on the section like  "IF NEXT({DDSpell Amt}) = {DDSpell Amt} then TRUE"