State tax filing

Thank you for your help, last question: I am snail mailing my state return.  I will mail the W-2s  (minus the W-2 that I accidently omitted, hence the need to amend taxes) with my state tax form.  When I mail the amended form, do I need to mail duplicates of all of the W-2s again (or just the omitted W-2)?

Thank you